of the Amazon Valley. 153 



angulos posticos sitis : elytris oblique truncatis. Long. 2| 



lin. c?. 



Head dingy brown. Antennae dull reddish, furnished with 

 very short setse 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 vittse. 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 punetatis, apud medium utrinque macula 

 magna nigro velutina fulvo cincta. Long. 2\ lin. S • 



Head dingy tawny. Antennae 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. 



<S 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 ( $ ), con- 

 vexa. Caput flavo-cinereum. Antennae rufescentes, articulis (duobus 

 basalibus exceptis) apice obscurioribus. Thorax usque ad spinas la- 

 terales leniter ampliatus, delude paulo attenuatus, spinis longis acutis, 

 ante basin sitis ; dorso fusco, medio maculis quatuor fulvis. Elytra 

 elongata, postice sensim attenuata, apice oblique truucata, angulo 



