196 OEDEE—THYSxiNURA.
Tlicy reside in t-lie earth, and may occasionally be seen whilst dig-ging- in garden gronnd. They have recently
received considerahle attention from the faneifnl theory which has been applied to them hy Sir John Lnbbock,
that they constitute the primary type of form from which the whole of the class of insects has been evolved.
GENUS—LAPYX.
(HaUdajj Trans. Linn. Soc. xsiv, p. 442.)
Tliis Genus comprises species of larger size than the Campodeie, which bear a striking resemblance to immature
Forficulffi, the body being terminated by two exarticulate horny, forceps-like appendages. Dr. Meinert
compares the motions of these insects to those of the Myriapodous Lithobii.
SPECIES 1—IAPTX SOLIFUGUS.
(Haliday, Op. cit. pi. XLIV ; Meinei-t, Op. cit. supr.)
Inhabits mountainous districts in Italy (Tuscany, the Roman territory, and Naples) ; also near Toulon,
Algiers, and Constantine (LucaSj Ann. Soc. Ent. France, 1867, Proc. p. 30) ; also taken by him in a cool planthouse
in the Jardin des Plantes, Paris.
SPECIES 2—IAPYX SAUSSUEII.
(Humbert in Guérm-Méneville, Mag. Zool. 1868, 2nd Ser. vol. xx, p. 351, pi. XXII, figs. 1-5.)
Habitat; Mexico, Santa Cruz, Moyoapian, near Orizaba (M. Sumiehrast).
SPECIES 3—IAPTX WOLLASTONII. Westw.
PIATE XXXYII, FIG. 3.
Capite obovato : antennis capite hand multo longioribus, articulis tribus basalibus (fig. 3 a) crassioribus,
reliquis intus setosis, articulis transversis, sensim ad apicem (fig. 3 i) attenuatis ; prothorace parvo ovali depresso,
medio linea longitudinali tenui impresso ; abdominis segmento septimo dorso postico profonde emarginato,
segmento octavo infra pauUo supra segmentum sequens producto ; segmento nono brevissimo suhtus in medio
profunde inciso (fig. 3 a); segmento ultimo subquadrato ; forcipis margine interno intus orenulato ante medium
dente conico ai-mato ; pedibus brevibus compressis, femoribus latis et ante medium ut videtur subartieulatis.
Long. corp. lin. 4| .
Habitat ; the almost inaccessible island ' Bugio,' the Southern Deserta, near Madeira (D. Wollaston).
In Mus. Hopeiano Oxoniag.
The specimens here described are in a dried condition, mounted on card. On examining the antenna very
carefully, the joints appear to be transverse, but connected together by a membranous tube as long as the joints
it connects, which shrinks in drying so as to draw the disc of the second of each pair of joints into the cup
formed by the cavity of the apex of the preceding joint.
i:i > ii
O E D E E - A N O P L U E A .
FAMILY—LIOTHEIDIE.
GENUS—A N C I STRONA.
Corpus valde depressum : caput fere semicirculare, margine postico valde emarginato ; subtus pone mentum
processu magno corneo bipartito, utrinque cornu latum profunde incisum, sub prosternum reflexum formante
(fig. 4 a, caput infra visum ; 4 b, processus pars lateralis lateraliter visa) ; antennEe obsoleta! ? (hand diseernendas,
in orbitu suborbitali abseondita; ?). Mentum magnum, parte antica (labium ?) paullo dilatata, setis 4 longis retro
extensis instructum ; palpi labiales baud diseernendi ; labrum parvum transversum ; mandibulaj valid® corneas
subtrigonEe apice bifido (fig. ésc) ; maxillas lobo elongate ovali terminata3, palpis maxillaribus brevibus 4-articulatis
(tig. 4 d) ; prothorax semicireularis, capitis magnitudine, medio lateribusque sulcatis, his longe setosis, setis
retro porrectis ; metathorax abdomine continuus; abdomen e segmentis 10 constans; pedes breves, femoribus,
prfesertim anticis, dilatatis.
The remarkable corneous apparatus on the under side of the head occurs in no other species of the order
hitherto described.
There is a curious organ with a horny central rib, furcate at its extremity, within the mouth, repreisented
in fig. 4«.
SPECIES 1—ANCISTROISTA PEOOELLARIIE.
PLATE XXXYII, Fie. 4.
Piceo-nigra, nitida, liEvissima : capite castaneo, anguHs posticis rotundatis, retro porrectis et longe setosis,
foveis duabus rotundatis prope marginem anticum, maculis duabus pallidis prope basin capitis ; tborace castaneo
suturis piceis ; margine laterali segmentorum ultimorum abdominalium pallide castaneo.
Long. corp. lin. .24.
Habitat in ProeeUariam Capensem (DD. Rob. Brown et W. Baird). In Mus. Britann. et Hopeiano
Oxoniise (olim nostr.)
FAMILY—POLYCTENIDIE.
Inseeta parasitica, anomala, afBnitatem cum Hemipteris exhibentia.
Caput magnum depressum, antice subtrigonum rotundatum, divisione magna lunata inermi (elypeo ?) antioe
instructum ; angulis posticis prominentibus ; subtus antice (sed pone clypeum) antennis 4-articulatis lateraUter
et retro extensis, basi ad basin impressionis profunda reniformis lateralis (cujus margines sunt valde serratse—an
trabeculis Docophori, etc. analoga ?) aExis ; proboscis cylindrica fere capitis longitudine 3-articulata, intus setis
armata ut in Hemipteris ; prothorax magnus ; meso- et metathorax transversi ; mesonoto appendiculis duabus
elytriformibus brevibus subquadi-atis aut postice rotundatis instructo, sutura recta coaUtis; abdomen distincte
multi-(8- 9-)anmilatum, setosum, in uno sexu (foimina ?) appendice longo tenui curvato corneo canaliculato ;
pedes antici breves orassi, postici 4 elongati setis longis; tarsi 3-articulati, articulo basali in pedibus 4-posticis
ad basin subtus lobo membranaceo basali prasdito ; ungues 2 validi acutissimi curvati.
In the year 1863, Signor H. Giglioli forwarded to me specimens mounted ia Canada balsam of two insects
of diflferent sexes which he had taken at Amoy, China, upon a bat of the Genus Molossus. From the fact of
their being- uniques, and from being rendered veiy transparent by the manner in which they were preserved.