22 Mr. H. W. Bates on the Longicom Coleoptera 



ot less notched at the tip. Ovipositor of the females short, pro- 

 jecting but slightly beyond the tips of the elytra, and subconical 

 in form. Legs stout; thighs strongly clavate; fore and middle 

 tarsi of the males slightly dilated ; basal joint of posterior tarsi 

 longer than the two following taken together. 



The species selected by M. Thomson as the type of this genus 

 is the E. nitidus of White (Cat. Long. Col. Brit. Mus. p. 371, 

 pi. 9. fig. 4), which he has redescribed in the ' Classification des 

 Cerambycides ' under the name of E. Venezuelensis. A con- 

 siderable number of species will be found to associate with E. 

 nitidus, the principal generic feature of which (omitted in M. 

 Thomson's definition) is the sharp lateral keels proceeding from 

 the shoulders of the elytra. This distinguishes the Eutn/pani 

 well from Xylergates, to which some of the species (e. g. E. 

 ellipticus of Germar) are otherwise closely related. There is not, 

 however, any positive character whereby to distinguish Eutry- 

 panus from Colohothea; for some species, by their elongated 

 shapes, might almost be mistaken for Colobothea, and the aber- 

 rant forms of the latter genus have lateral thoracic tubercles and 

 fore tarsi in the males not differing from those of the inter- 

 mediate legs, as in the Eutrypani. The best distinguishing 

 character is probably this : — in Eutrypanus the lateral outlines 

 of the head and thorax are not continuous, and therefore the 

 fore part of the body has not that conical form which gives so 

 peculiar a facies to the Colobothece. A less trenchant point of 

 difference is presented by the elytra, which in the great majority 

 of the Colobothece are nearly straight to the apex, but in Eutry- 

 panus are curvilinearly attenuated before the apex. 



1. Eutrypanus nobilis, n. sp. 



E. oblongus, robustus, brunneus : thoracis lateribus late ochraceo 

 vittatis: elytris maculis trilobis duabus communibus ochraceis, 

 una apud medium suturali, altera majore subapicali : spinis tho- 

 racicis acutis, retrorsum spectantibus. Long. 7 lin. S • 



Head dusky, with scant tawny pile. Antennae twice the 

 length of the body ( cj), brown, tips of all the joints blackish, 

 bases pallid. Thorax widened from the front to the tips of the 

 thoracic spines, which are large, acute, and oblique, and placed 

 behind the middle of the sides j surface convex, slightly uneven, 

 dark brown, with a broad ochreous vitta on each side margined 

 with black. Elytra broad at the base, gradually narrowed to 

 near the apex, thence more abruptly narrowed; apex transversely 

 sinuate-truncate, both angles equally and moderately produced ; 

 lateral carina extending beyond the middle of the elytra, acute, 

 but not smooth; whole surface thickly punctured, punctures 

 setiferous, colour dark brown mixed with tawny ; over the suture 



