of the Amazon Valley. 23 
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. 43 ln. Q. 
Head brown, vertex with two black spots. Antenne dull 
reddish, bases of jomts greyish. Thorax with small and conical 
lateral tubercles placed :a little behind the middle, disk uneven, 
brown, the middle part with two black vitte, 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 carinzee moderately acute 
and smooth, and reaching beyond the middle of the elytra ; 
surface: and sides scantily punctured towards the base, brown, 
with many black and ill-defined longitudinal streaks, besides a 
broad indistinct ashy streak beginning at the shoulder, bending 
towards the suture, and then continuing, parallel to the suture, 
to the apex ; the mode of coloration gives to the insect a striking 
resemblance to a small chip of bark. Body beneath dusky, with 
scant ashy pile. Legs reddish, rmged with ashy. 
2 Ovipositor projecting very slightly beyond the tips of the 
elytra; dorsal plate obtusely rounded at the tip, ventral trun- 
cated. 
Banks of the Cupari, a branch of the river Tapajos. 
3. Hutrypanus incertus, n. sp. 
&. elongatus, subangustatus, fulvo-griseus, nigro vittatus et macu- 
latus : spinis thoracicis parvis, conicis, pone medium sitis : elytris 
postice attenuatis, apice breviter truncatis, nec dentatis. Long. 
4i-6lin. CS. 
Head blackish, orbits of eyes fulvous. Antenne black or dull 
red, third to sixth joints ringed at the base with grey. Thorax 
not much broader than the head ; lateral tubercles small, placed 
a little behind the middle; disk slightly uneven, ashy tawny, 
with six black vittz, the two outermost of which are below the 
lateral tubercles. Elytra elongate, gradually narrowed to near 
