of the Amazon Valley. 163 
Hippopsine belong ; but the claws are not thickened and sub- 
parallel, and the claw-joints of the fore tarsi not elongated— 
characters which further distinguish the present species from 
the Hippopsine. I do not think the slight elongation of the 
middle and posterior claw-joints warrants the establishment of 
a new genus for this species. 
24. Nyssodrys ptericopta, n. sp. 
N. elongata, postice sensim attenuata, fuliginosa, griseo obscure li- 
neata: elytris pone medium cinereo biguttatis, apice oblique valde 
truncatis. Long. 32 lin. ¢. 
Head tawny yellow, forehead with two brown spots. Antenne 
rusty red, basal joint darker. Thorax widened from the front to 
the tips of the short conical spines, thence narrowed in a sinuated 
line to the base; surface sooty brown, with seven very indistinct 
greyish lines. Elytra narrowed from base to apex, the latter 
obliquely and broadly truncated, angles obtuse; surface punc- 
tured towards the base, sooty brown, with several very indistinct 
greyish lines, and on the disk of each elytron a rounded ashy 
spot a little after the middle. Body beneath and legs clothed 
with greyish pile. 
$ Dorsal and ventral apical plates equally notched. 
Banks of the Tapajos. 
25. Nyssodrys ramea, n. sp. 
N. oblonga, convexiuscula, grisea, fusco plagiata: thoracis spinis 
lateralibus tuberculiformibus, mox pone medium sitis : elytris apice 
truncatis, angulis distinctis. Long. 43-53 lin. ¢. 
Head dingy brown, vertex grey. Antenne dusky; bases of 
fourth to seventh joints pale. Thorax widened from the front 
to the tips of the lateral spines, which are short and conical and 
placed soon after the middle; surface greyish, with confluent 
blackish patches. LElytra scarcely obliquely truncated at the 
apex, angles distinct ; basal portion covered with large punc- 
tures ; surface greyish, with blackish-brown spots and patches, 
some of them confluent and forming near the middle a zigzag 
fascia interrupted at the suture. Body beneath and legs clothed 
with grey pile. 
¢ Apical dorsal segment faintly, ventral broadly emarginated. 
Figa, rare. It has been since found also in the interior of 
French Guiana by M. Bar. 
26. Nyssodrys excelsa, n. sp. 
N. oblonga, subconvexa, brunnea, sericea: thoracis spinis lateralibus 
ab angulis posticis distantibus : elytris griseis, macula magna com- 
hie 
