22 Mr. H. W. Bates on the Longicorn Coleoptera 
or 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, 
pl. 9. fig. 4), which he has redescribed in the ‘ Classification des 
Cérambycides’ under the name of H. Venezuelensis. A con- 
siderable number of species will be found to associate with EL. 
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 Hutrypani 
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 Colobothea; for some species, by their elongated 
shapes, might almost be mistaken for Colobothee, and the aber- 
rant forms of the latter genus have lateral thoracic tubercles and 
fore tarsi in the males not differmg from those of the inter- 
mediate legs, as in the Hutrypani. 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 Colobothee. A less trenchant point of 
difference is presented by the elytra, which in the great majority 
of the Colobothee are nearly straight to the apex, but in Hutry- 
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. ¢. 
Head dusky, with scant tawny pile. Antenne twice the 
length of the body (3), 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 ; 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 
