368 
INSECTA. 
South America. The head is large, with almost setaceous antennoe 
nearly as long as the body ; the external palpi are very salient, and 
terminated by a thicker joint elongated and pyriform ; the penulti- 
mate joint of the external maxillary palpi shorter than the folloAving 
one ; the two first joints of the labial palpi very short, and the ter- 
minal lobe of the jaws without any apparent unguiculus at the ex- 
tremity. The abdomen is oval, strangulated at base and pediculated. 
The legs are long and slender. 
The Ctenostomse approach the Megacephalee in the size of their 
pal])i, and in other I'espects approximate to the Tricondylee and 
Therates *. 
The others have no tooth in the middle of the emargination of the 
mentum. The labial palpi a.re contiguous at their origin, Avith the 
first joint obconical or in tlie form of a reversed pyramid, and di- 
lated or ^trolonged interiorly in the manner of an angle or tooth ; the 
exterior maxillary pal|)i hardly extended beyond the labrum. These 
species have been distributed iiito three subgenera. 
Therates, Lat. — Eurychile, Bonel. 
‘ The Therates in their general form resemble the true Cicindela?, 
but are distinguished from them, as well as from all other analogous 
subgenera, by their internal maxillary palpi, Avhich are A’ei’y small 
and acicular. The tarsi are similar in both sexes, with the penulti- 
mate joint cordate, unemarginate, and simply excavated above for 
the insertion of the last. 
Tliese Insects are exclusively ])roper to the most eastern islands 
of Asia, as Java, those of Sunda, and such as are to the north of NeAV 
Holland f. 
In the two folloAving subgenera, both proper to the East Indies, or 
the remotest of tlie Oriental islands, the body is narroAV and elon- 
gated, 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. — CoLLYRis, Fab. 
Furnished with wings; antennae thickest near tlie end ; last joint 
of the labial palpi almost securiform, and the pemdtimate frequently 
curved ; thorax nearly cylindrical, narrowed and strangulated before, 
with the anterior margin widened ; abdomen almost cylindrical, 
widened and enlarged posteriorly ; tarsi similar in both sexes, the 
penultimate joint jjrolonged obliquely on the inner side, as large as 
the preceding one ; the latter in the form of a reA^ersed triangle Avith 
acute angles 
* See the Eiitomologice Braziliance Specimen of Kliig ; the Spec. Gen. des Coleop. 
of Count Dejean, I, p. 152, et seq., and the Snpp. to vol. II of the Hist. Nat. des 
Coleop. d’Eur., fascic. I, p. 35 ; the Entom. Imp. Russ, of M. Gotthelf Fischer, 
I ; Gener. Insect, p. 98. 
i' See Lat., Dej. Hist. Nat. des Coleop. d’Eur., fascic. I, p. 63 ; the Spec. Gen. 
des Coleop. Dej., I, 57, and the Supp. to vol. II; and particularly the memoir of 
Bonelli on this genus. 
J See the works just quoted. The species which I have described and figured 
under the name of longicoUis is distinct from the Fabrician species of the same ap- 
pellation ; it is the ColUuris emurginatu, Dej., Spec. Gener., I, p. 165. 
