142 
fore part of fhe body has not that conical form which gives so 
peculiar a facies to the Colohothece. A less trenchant point of 
difference is presented by the elytra, which in the great majority 
of the Colohothece are nearly straight to the apex, but in Entry- 
jmnus are curvilinearly attenuated before the apex. 
1. Eutrypanus nohilisj 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. Antennse twice the 
length of the body (6), 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 
near the middle is a trilobed ochreous spot, and near the apex 
over the suture is a much broader but similar spot, the two con- 
nected by an ochreous sutural line. Body beneath tawny ashy. 
Legs moderately long; thighs abruptly and strongly clavate, 
dusky, with ashy pile ; two basal joints of the tarsi grey. 
Terminal abdominal segment with dorsal and ventral plates 
very slightly emarginated. Fore and middle tarsi broader than 
those of the hind legs. 
Obydos, on the Guiana side of the Lower Amazons; rare. 
2. Eutrypanus assula, n. sp. 
E. oblongus, brunneus : thorace nigro vittato, elytris nigro cinereo- 
que strigosis : spinis thoracicis brevibus, conicis, pone medium 
sitis ; elytris breviter oblique truncatis. Long. lin. 2 • 
Head brown, vertex with two black spots. Antennse dull 
reddish, bases of joints greyish. Thorax with small and conical 
lateral tubercles placed a little behind the middle, disk uneven, 
brown, the middle part with two black vittse, the sides above the 
tubercles each with two short black lines, below the tubercle a 
broad black streak. Elytra moderately broad and convex, curvi- 
linearly narrowed from near the base to the apex, the latter 
briefly and obliquely truncated ; lateral carinse moderately acute 
and smooth, and reaching beyond the middle of the elytra ; 
