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Show 272 INSECTA. tion. The germanica, unlike the p1·eccding, does not fly whe about to be seized but escapes by running, which it does wit~ great speed. M. Fischet·, in his En tomography of Russia, has . ' placed a Brazilian species (T. marginatus) in the subgenus Therates. All these species are wingeil; but some apterous ones are known whose abdomen is also nal'l'ower and more oval; and in which the tooth of t~e em~rgin~tion of the mentum is very small and hardly sens1ble. Such 1s the one figut·ed in our IIist. Nat. des Coleop. d'Europc, I, i, 5, under the name of coarc.' tata. Count Dejean, Spec. Gen. des Coleop., II, p. 434, has formed a new genus with them, that of D1·omica( 1 ). Sometimes the body is long and nart·ow, the thorax elongated, in the form of a knot, narrowed before; the third joint of the,two anterior tarsi of the males, pallet-shaped and projecting internally; the fourth is inserted exteriorly near its base. · CTENOSTOMA, Kiug.-Caris, Fisch. This subgenus appears to be peculiar to the intertropical regions of South America. The head is large, with almost setaceous an· tenn<e nearly as long as the body; the external,palpi are very salient, and terminated by a thicker joint elongated and pyrif01·m; the pen· ultimate joint of the external maxillat·y pal pi shorter than the fol· lowing one; the two first joints of the labial palpi very short, and the terminal lobe of the jaws without any apparent unguiculus at the extremity. The abdomen is oval, strangulated at base and pedicu· lated. The legs are long and slender. The Ctenostom<e approach the Mega.cephal<e in the size of their palpi, and in other respects approximate to the Tricondylre and Therates( 1 ). · · The others have no tooth in the middle of the emargination of the mentum. The labial palpi are contiguous at their· origin, with the first joint obconical or in the form of a reversed pyramid, and di· lated or prolonged interiorly in the manner of an angle or tooth; the exterior maxillat·y palpi hardly extend beyond fhe labrum. These species have been distributed into three subgenera. TnERATEs, Lat.-Eurychile, Boncl. The Therates in their gener·al form resemble the true Cicindei:E, (I) See the Entomologire Drasilianre Specimen of 1\llig; the Spec. Gen. de! Coleop. of Count Dejean, I, p. 152, et seq., and the Supp. to vol. II of the Hist. Nat. des Co1eop. d'J~ur. , fascic. I, p. 35; the Entom. Imp. Russ. of M. Gotthe~ Fischer, I; Gcner. Insect. p. 98. COLE<;lPTERA. 273 but are distinguished from them, as well as from all other analogous subgenera, by t~eir int~rnal ~a~illa.ry palpi, which are very small nd acicular. fhe tarsi are s1m1lar m both sexes, with the penulti-a • mate joint cordate, unemargmate, and simply excavated above for the insertion of the last. These Insects are exclusively propet· to the mos't eastern islands. of Asia, as Java, those of Sunda, and such as are to the no1•th of New Holland.( 1) In the two following subgenera, both p1·oper to the East Indies, or the remotest of the Oriental islands, the body is narrow and elongated, and the thorax almost cylindrical, or in the form of a knot. The third and fourth joint of the tarsi is prolonged interiorly in the manner of a lobe. CoLLIURis, Lat.-Collyria, Fab. Furnished with wings; antennre thickest near the end; last joint of the labial pal pi almost securiform, and the penultimate frequently curved; thorax nearly cylindrical, narrowed and strangulated before, with the anterior margin widened; abdomen almost cylindrical, widened and enlarged postel'iorly; tarsi similar in both sexes, the penultimate joint prolonged obliquely on the inner side, as large as the preceding one; the latter in the form of a reversed triangle with acute angles( 2 ). T.!ucONDYLA, Lat. Destitute of wings; antennre filiform; penultimate joint of the labi.al pal pi longest and thickest; thorax in the form of a knot ' sub- ovotd, strangulated, truncated, and turned up at both ends; abdomen ov~J, oblong, narro~e~ towards the base, and slightly gibbous postert~ rly,; three first JOints of the anterior tarsi dilated in the males the third obliquely prolonged on the inner side in the manner of ~ lobe; the fourth nea~ly similar, but much smaller and less prolong-ed( 3). · . The second tribe, or the CARABicr, Lat., comprehends the genus (l) See Lat., Dej. Hist. Nat. des Coleop. d'Eur., fascic. I, p. 63; the Spec. Ge~. des Coleop. Dej., J, 57, and the Supp. to vol. II; and particularly the memoll' of Bonelli on this genus. (d2) See the works just quoted. The species which I have described and figured un llear. the .n a.m e of w1-n--g,c• o lli8 1. s dI' St.t nct from the Fab1•ician species of the same ap-pe(. l)tt~;~~t. ts the Oolliuris emarginata, Dej., Spec. Gener., I, p. 165. Vor .. III.-2 K |
