34 ORDER—COLEOPTERA. SECTION—PENTAMERA.
The orbicular prothorax, with its deep circular excavation of the disc, will distinguish this most remarkable
species from every other known Coleopterous insect. The under side of the prothorax is excavated in front, so
that when the head is bent down it fits exactly into the hollowed space in front of the anterior coxa), leaving
only exposed the dilated apex of the prosternal spine (fig'. 10 a, fig. 10 i representing the under side of the head
when raised np, shewing the large mentum covering the mouth). The mandible (fig. 10 c) has the outer horny
portion obtusely rounded at the tip. The maxilh-c (fig. 10 tl) have the base elongated so as to be visible on the
outside of the base of the mentum; the galea is strongly angulated at its base, nearly forming a right angle with
the basal portion ; its apex is bifid, the apical tooth of the mando is much more slender, with its apex trideutate.
The mentum (fig. 10 e) is wider than long, the sides beneath the insertion of the palpi dilated and
rounded, the fore margin nearly straight and the palpi very short. The elytra are oblong with the sides parallel,
delicately marked with oblique striolffi, the suture elevated, and each having a strong and elevated carina near
to and parallel with the suture. The legs are short and compressed and all the tibias are destitute of lateral spines.
The tarsi are 3-jointed, the anterior (fig. 10_/; apex of tibia and tarsus seen from above; lO,?, the same seen
below) shewing a minute rudimental joint, or constriction, at the base of the first joint. In the four posterior
tarsi, which are 3-jointed, the basal joint itself is minute. The body beneath is black and glossy, with a
slig-ht pitchy tinge. The four basal segments of the abdomen beneath are marked with a broad, but shallow
impression. They are covered with very large oval punctures, which decrease in size to the podex. The
sides of the metasternum are obliquely striolated.
I have named this most singular insect after my lamented friend Dr. Schaum, who, in the most liberal
manner, assisted me to the utmost of his power in preparing this Monograph.
GENUS 19—CCENOCHILUS.
(Schaum, Gormar Zeitschr. ili. p. 268, 1841.)
Corpus latitudine jilus duplo longius, superficei dorsali punctata nitida. Cl)T)eus transversus convexiuseulus
apice sinuato et parum reflexo. Antenna: articulo basali incrassato sed non triangulariter dilatato. Mandíbula:
parte extema cornea, extus rotundata apice obtuso. Maxillarum basis utrinque pone mentum conspicua,
galea et mandone bidentatis. Mentum oblongum canaliculatum angulis anticis lateralibus rotundatis, margine
antico plus minusve profunde inciso. Pronotum suborbiculare antice posticeque angustatnm, angulis baud
tubereiüatis. Pedes validi mediocres. Tibia; omnes bidentatíB. Tarsi tibiis longiores 5-articulati. Abdomen
maris subtus hand aut vix canaliculatum.
The narrow elongated form of these insects, together with the bidentate structure both of the galea and
mando of the maxilla;, the strong spine in front of the presternum, the dilated apex of the anterior tibia) in the
males (bidentate in the females), distinguish them from the neighbouring groups. Some of them are of
considerable size and others veiy small ; the elytra are more or less costated, and the males in some species have
the legs armed in a remarkable manner.
The species are natives of Africa and the East, and are arranged below according to their localities, although
some of them are so closely allied together (if not absolutely identical) as to have occasioned some confusion
in their synonymy.
DIVISION I—SPECIES AFRICAN/E. (Sp. 1-17.)
SPECIES 1 (56)—COÌNOCHILUS MAÜRUS.
PLATE X I , Fia. 5.
Elongatus toto rufo-piceus, vel pieeo-niger, nitidus ; clyppo transverso, paullo sinuato ; mento subquadrato,
angulis anticis rotundatis, margine antico bifido ; vertice postico carina tenui transversa instructo ; prothorace
rotundato antice angustiori, parte latiori pone medium posila, margine antico in medio tubérculo elevato instnicto,
lateribus distincte teuue marginatis, utrinque intus ángulos posticos bümpresso et canali tenuissimo
medio dorsali; elytris subcastaneis longitudinaliter eanaliculatis; pygidio convexo; tibiis anticis subito ad
apicem dilatatis : abdomine subtus segmentis mediis in medio vix impressis.
FAMILY—GETOMIDYE. SUB-FAMILY -CRIÍMASTOCÍIEILIDES. 35
Long. corp. lin. 10-11.
Habitat ; Senegal (Gory et Perch.), Guinea.
SYN. : C'elonia man,-a. Fabriuius, Syst. Eleutli. ii. p. 158 ; Schoiiherr, Syii. Ins. iii. 143 ; Burn.eister, llandb. vol.
iv. appendix (nec Buniieister, iii. p. 666).
Oremast. Faulus. Gory et Perch. Mon. Cet. p. 112, pl. XV, Eg. 4 (nec Biirmeister, Ilundli. iii. p. 604).
1 have drawn up the above description from an examination of the Eabrician tj'pe in the Royal Museum
of Copenhagen. r 1 • 1 •
The elytra are very polished, with one well defined impressed stria next the suture, outside ot which is
a line formed of interrupted pui ctures ; next a moderate depression and then a sublateral one (fig. 5 a),
the middle of the disc covered with punctures. The metasternum and posterior margin of the four hind legs
are clothed with lutcous hairs.
Much confusion has arisen respecting the nomenclature of this species, and I am indebted to the late
Dr. Schaum for the following MS. remarks, in which it is cleared up : —
' Malgré mon assertion deux fois répétée (Annales Soc. Ent. France, p. 396 et 424) que M. Burmei'ster
a décrit sous le nom de Coen. Fmthis le même individu que Gory et Percheron et que le Faitlus Burm^. était
donc le même insecte que le Paulus Gor. et Perch., j'ai eu absolument tort, et je m'empresse de le réparer.
Burmeister a réelement décrit un individu que appartenait à M. Thörey. Je m'en suis pu convaincre en recevant
de nouveau ce dernier par ÎI. Thörey. Ne pouvant pas vous le communiquer, je l'ai fait dessiner et je vous
envoie ce dessin (pl. XI, fig. 8), que est très exact. Seulement la grandeur naturelle n'a pas été indiquée sur ce
dessin; elle est la même que celle du l ^ aulus Gor. et Porch. Voici quelques diiférences qui séparent le Paiihis
Burin.; que j'ai nommé ^jroc«™ pour éviter toute confusion avec le Paulus Gor. et Perch, he jirocerus a la
même gn-andeur, mais il est plus large, les élytres sont plus courtes. La tête n'a pas la carène transversale
entre les yeux qu'on voit dans le Paulus Gor. et Perch. Le corselet est plus orbiculaire et plus large, sa plus
grande largeur se trouve au milieu et non pas derrière le milieu comme dans le Paulus Gor. et Perch. ; le
corselet est autrement ponctué, les pièces axillaires et le dessous sont velues, les élytres ont la suture et trois
faibles côtés élevées, ces côtés et la suture ont des points écartés et fins; les intervalles sont aciculés plus
fortement siu- les côtés et à l'extrémité, etc.
' Il restait encore à décider lequel de ces deux insectes est la véritable Cetonia maura Fabr. Je les ai donc
envoyés à M. Westermanu pour être comparés avec le type de celle-ci ; J\I. Westermann me répond que le Paulus
Gor. et Perch, est parfaitement identique à la C. maum Fabr. IM. Burmeister avait donc raison également sur
ce point ; la sjTionj-mie de ces deux insectes serait donc :
(fl.) Coen. maurus Fab., Patdus G. et P.
(Ä) C. procens M., Paulus Burm.
La patrie du procerus est un peu douteuse. Thörey ne la connait pas d'une manière sûre. Burmeister en
disant qu'il vient du Sénégal se rapportait à l'indication de Gory et Percheron. Je crois qu'il vient de la
Caffrérie, ayant vu, chez Til. Von Winthem à Hambourg, un second individu du procerus trouvé dans cette
localité par Eklon.' Schaum, in litt. Oct. 3, 1846.
My figure 5 in pl. X I is drawn from Gory's typical specimen, kindly forwarded to me by Dr. Schaum,
who purchased his collection of Cetouiidie. The lateral margins of the prothorax are slightly injured and notched
in this specimen, as represented in my figure. The prothorax has the fore margin with a central tubercle ;
there are two impressions w ithin the posterior angles, and on the disc before the middle are two very minute
circular impressions scarcely visible. The fore tibioe have the lower tooth broad.
The late J. Aspinall Turner, Esq., M.P., sent me for delineation two specimens which be had received from
Gambia, and ^Nliich I have represented in figures 6 and 1. His death has prevented me from again comparing
them with my drawings of Cr. Paulus Gor. and Perch, and Cr. procerus Schaum, with the view of clearing up the
slight ditlerences which exist between the different figures. Thus the fore margin of the clypeus is emarginate
in fig. 5, but slightly rounded in fig. 6. (This difference is probably occasioned in consequence of the head
being raised at a dill'erent angle in the two specimens.) The lateral margins of the thorax are entire in fig. 6,
the specimen not being injured in this part as in fig. 5. The two punctures of the disc of the prothorax are
apparently more ceiitr.al in fig. 6 than in fig. 5. The specimen represented in fig. 6 has the abdomen shgbtly
depressed in the niidtUe of the three anterior segments. The calcaria of the hind legs are acute in the male,
F a