of the Amazon Valley. 153 
angulos posticos sitis: elytris oblique truncatis. Long. 24 
lin.s oe 
Head dingy brown. Antenne dull reddish, furnished with 
very short setze above and beneath. Thorax moderately widened 
from the front to the tips of the lateral spines, which are acutely 
conical, placed obliquely, and separated from the base by a 
sinuated space; surface dull ashy or tawny brown, with paler 
marks forming two indistinct interrupted central vitte. Elytra 
not broader than the thorax, oblong-ovate, apex rather obliquely 
truncated, angles distinct; surface slightly convex, punctured 
(except near the apex) partly in rows, dingy tawny or ashy 
brown, with paler greyish or ashy specks, four of which (larger 
than the rest) form an interrupted flexuous fascia beyond the 
middle. Body beneath and legs blackish, clothed with dingy- 
brown pile. ¢ Terminal ventral segment faintly emarginated 
at the apex. 
One example, Santarem. The species is distinguished from 
its nearest relatives by its narrower-oblong form and the sinuation 
of the space between the spines and the base of the thorax. 
6. Nyssodrys binoculata, n. sp. 
N. parva, subovata, antice et postice attenuata; thoracis spinis late- 
ralibus brevissimis: elytris convexis, valde transverse truncatis, 
cinereis, fulvo fuscoque punctatis, apud medium utrinque macula 
magna nigro velutina fulvo cincta. Long. 2} lin. ¢. 
Head dingy tawny. Antenne red, apices of the joints (from 
the third) blackish. Thorax convex, widened from the front to 
the tips of the lateral spines, which are extremely short, thence 
narrowed obliquely to the base; surface brown, with curved 
fulvous spots. Elytra convex, narrowed to the apex, broadly 
and transversely truncated ; surface punctured towards the base, 
grey, with numerous blackish specks; near the middle on each 
side is a large round velvety-black spot, neatly margined with 
fulvous, and touching the lateral margin; apex dusky brown, 
with a central fulvous spot. Body beneath clothed with ashy- 
yellow pile. Legs reddish. 
¢ Terminal abdominal segment narrowed to the tip; both 
dorsal and ventral plates slightly notched. 
Santarem, on dead twigs. There is a closely allied species 
found near Rio de Janeiro *, 
* Nyssodrys dioptica. Subelongata, postice sensim attenuata (9 ), con- 
vexa. Caput flavo-cinereum. Antenne rufescentes, articulis (duobus 
basalibus exceptis) apice obscurioribus. Thorax usque ad spinas la- 
terales leniter ampliatus, deinde paulo attenuatus, spinis longis acutis, 
ante basin sitis; dorso fusco, medio maculis quatuor fulvis. Elytra 
elongata, postice sensim attenuata, apice oblique truncata, angulo 
