of the Amazon Valley, 169 



Hippopsinse 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 Hippopsinse. 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. s^. 



N. elongata, postice sensim attenuata, fuliginosa, griseo obscure li- 

 neata : elytris pone medium cinereo biguttatis, apice oblique valde 

 truncatis. Long. 3| lin. c? • 



Head tawny yellow, forehead with two brown spots. Antenna 

 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. 



6 Dorsal and ventral apical plates equally notched. 



Banks of the Tapajos. 



25, Nyssodrys ramea, n. sp. 



N. obloiiga, convexiuscula, grisea, fusco plagiata : thoracis spinis 

 lateralibus tuberculiformibus, mox pone medium sitis : elytris apice 

 truncatis, angulis distinctis. Long. 4|— 5| lin. S • 



Head dingy brown, vertex grey. Antennae 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. Elytra 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. 



<S Apical dorsal segment faintly, ventral broadly emarginated. 



Ega, 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- 



11* 



