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SECTION—PENTAMERA.
SPECIES 4 (7-1)—GENUCHU8 TERDITiTS.
PLATE X, FIG. 2.
Subclepressus ; capite transverso, olypeo verticali supra angulato-truucato, margine infero panilo prominulo ;
vertice rngoso-punetato convexo ; prothorace magno convexo, lateribus rotundatis ; disco cieatricoso-punetato,
aljsqne canali centrali, tiiberculoqne parvo in medio prope marginem anticnm instrueto ; el)d;ris brevioribns
gramilato-pimetatis, singnlo 4-costato, eostis panini prominulis Ifevibns; sutura elevata.
Long', corp. lin. 5 ; lat. liumer. elytr. fere lin. 2.
Habitat; ?
This species diflers from the preceding in tlie large size of the prothorax, which is not longitudinally
channelled down the centre, and in the shorter elytra, the sides of which are not parallel, but are gradually
narrowed from the base to the extremity.
GENUS 21—LISSOGENIITS.
(Scbaum, Ann. Soc. Ent. France, 1844, p. 420 ; 1S45. P- 53 ; Chtiimiobius, Burmeister, Hnndh. vol. v. p. 567 (1847).)
Habitus Cremastocheili elongati : clypens antice obtuse trigonus, acumine emarginato ; inaxillarnm mando
brevissimiis, apice siibobtuso, supra penicillatus, galea cornea, falcata apice unidentata, extus pilosa ; mentum
latum, OS clandens, omnino planum Isevigatum pone medium utrinque impressmn pro receptione palporum ; prothorax
longitudine latior, supra depressus, lateribus valde dilatato-rotundatis, angulis posticis rectis parvis ;
prosternimi cum processu ante coxas anticas dependente ; metasternum angustum, non porrectum ; tibiffl anticfe
triquetrse extus obtuse tridentiitie, supra creimlatce ; tarsi 5-articulati, anticorum articiilis brevibus crassis obconicis
ultimo transversim impresso, unguibus minimis; abdomen siiiraeulis duobus ultimis elevatis, seginentis
ventralibus secimdo tertio et quarto longitudiualiter in maribus parum depressis.
This genus was founded by Dr. Schaum, on an insect from Guinea, and was considered by him as intermediate
between Scaptobius and Cyclidius. He incorrectly described it as wanting the dependent spine in front
of the anterior tibia;, and, from his specific description of the type, it would appear that the specimen in the Basle
Museum which he examined was so satm-ated with grease as to cause the liiteous irrorations to disappear. Hence,
from these two causes. Dr. Burmeister was probably led to infer that the insect, which he described in IMfT under
the name of CUlionolms conspersiis, (with the prosterniim spined, and the body covered with whitish tomentosity,
'niger, supra opacus, cicatricibiis ellipticis dense signatns, interstitiis albido-tomentosis,') was distinct from
Dr. Schaiim's Lissogenius. The difference of the locality of the two insects might also lead to their being
considered as distinct ; but the figure given by Dr. Sehaum of the Basle specimen from Guinea proves it to be
congeneric, if not specifieally identical, with the Natal and Caffrarian specimens subsequently received in some
numbers.
SPECIES 1 (75)-LISSOGENIUS COliSPERSUS.
PL.A.TE X, EIG. 11.
Oblongus, niger, siibopacus, supra parum convexus, sordide luteo-variegatus : capile confertissime rugosopunctato
; fronte transversim carinata, carina medio emarginata ; prothorace brevi, crebre rude, parum profunde
punctato, dorso impresso, ntrinque elevato, angulis basalibus emarginatis ; elytris in dorso planis, cicatricibus
ellipticis crebre impressis, singulo bicostato.
Long. corp. 11 mill.; lat. 5 mill.
Habitat; Caffraria, Natalia, &c. in tractu fluvii Gariepis. In Mus. Oxon., Holm. &c.
SYN. ; GMkmioUus compersus. Burmeister, Handb. Ent. v. 567; Schaum, Verz. Lam. Melit. p. 64.
Lissogenius luteo-varius. Boheman, Ins. Caffr. pars ii. p. 55.
The head is marked with a transverse ridge, running across between the places of insertion of the auteiinaB,
being interrupted in the middle ; the fore margin of the elypeus is .also elevated on each side. The maxillise
have the apex of the mando internally produced into a small obtuse tooth, and the galea is elongated and falciform
F A M I L Y — C E T O N I I D I E . S U B - F A M I L Y — C R E M A S T O C H E T L I D E S . 5 1
(pi X, fig. 11 a). The mentum is oblong, nearly flat, with the anterior angles rounded, the fore margin nearly
straight, the sides deeply impressed behind the middle for the reception of the base of the labial palpi (fig. 11 S).
The in-othorax has the middle of the disc fiat, the sides deflexed; it is covered with large cicatricose shallow
punctures; the posterior angles are sharply prominent and acute; a ridge, slightly oblique, extends forwards
from each towards the anterior angles of the prothorax, and separates the disc from the deflexed sides. The
prosternum is armed with a small deflexed spine in front of the anterior coxse (fig. 11 c, seen from the front of
the head). The elytra have the middle of the disc depressed, a rather strongly-raised ridge, parallel with the
margin, separating it from the deflexed side; the surface is covered with large oval cicatricose punctures, the
interstices filled in with irregular luteous spots; the two terminal spiracles are ])rominent, but obtuse. The legs
are short and strong ; the anterior tibife obtusely tridentate, and the tarsi very short and 5-jointed, the terminal
joint of the fore legs being strangulated in the middle and the ungues very minute.
SPECIES 2 (76)—LISSOGENIUS PLASICOLLIS.
Niger, opacus; thorace subhexagono ; disco piano angulis posticis rectis; elytris deplanatis.
Long. 9 mill. (4 lin.)
Habitat; Guinea. In Mus. Basiliensi.
SYN.: Lissogenius planicollis. Schaum, Ann. Soc. Ent. Erance, 1844, p. 421; ibid. 1845, !>• 53; "^erz. Lam.
Melit, p. 64.
' Caput nigrum opacum, rugoso-punctatum, ntrinque ante oculos transversim alte carinatum; clypeo basi
lateribus parallelo, apice obtuso trigone, acumine emarginato. Thorax longitudine latior, subhexagonus, lateribus
Elytra thoraee duplo longiora, hiinieris rotundatis, disco omni deplanato, postice callosa, lineolis disco semieUipticis,
lateribus magis ii-regularibus insculptis, nigra, opaca. Pygidium convexum apice inflexum. Corpus
siibtus nigrum opacum, lineolis arcuatis insculptis tectum.^
The above are Dr. Schaum's characters of the specimen in the Basle Museum from Guinea, which differs
almost solely, in its locality and entirely black colour, from the Cafltrarian insects described above ; the prothorax
is, moreover, described as ' subhexagonus,' which hardly agrees with the latter specimens.
GENUS 22—SCAPTOBIUS.
(Schaum, Gormar Zeitschr, iii. 1841, p. 260.)
Corpus parvum, obscurum, oblongo-ovatum, depressum : caput vertice in medio subtuberculato ; antennie
articulo primo magno ; cl_ypeus quadratus, e vertice linea curvata separatus, margine antico parum elevato ;
maxillarum galea et mando iinidentati; mentum transverso-quadratiim, latissimum os inferno exaete claudens,
angulis antieis rotundatis, basi in spinam couieam liberani infra jugulum dependentem producta ; palpi labiales
breves gráciles; elytra oblongo-quadrata depressa; pronotmn antice posticeque angustatuni, intus ángulos
posticos ntrinque excisum; prosternum spina parva deflexa setosa ante coxas anticas armatnm ; tibiic anticce
tridentata! dente basali in maribus minus distincto ; tarsi tibiis breviores 4- vel 5-artieulati ; abdomen subtus,
ut niihi videtur, in omnibus individuis convexum segmento quinto ad basin transverse et profunde depresso ;
mesosternum baud proniinens, postico in medio angustissimiim et inter coxas intermedias retro extensum,
metasterni medio vix producto conjunctmn.
This genus is composed of a few very obscure South African insects, having the appearance of small
depressed species of Trox, the surface of the elytra being generally rugose or carinated ; which are further
distinguished by the large size of the mentum, terminated behind in a sharp free point beneath the jugulum.
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