152 Mr. H. W. Bates on the Longicorn Coleoptera 



Head tawny, vertex with three dusky vittse. Antennae dull 

 reddish, clothed with tawny-brown pile ; tips of joints, from the 

 third, dusky. Thorax widened from the front to the tips of the 

 lateral spines, which are obtusely conical and placed near the 

 hind angles, thence narrowed very obliquely to the base ; surface 

 dingy tawny ; disk with three dark brown vittae, the middle one 

 intersected by the pale dorsal line. Elytra convex, narrowed 

 curvilinearly from half the length to the apex, the latter very 

 obliquely truncated ; sutural angles of the truncature rounded 

 off, external ones obtuse; sui-face punctured, except near the 

 apex, tawny, streaked very irregularly with ashy and dark brown, 

 the streaks short, longitudinal, and of unequal thickness, four, 

 thicker than the rest, lying parallel to the suture. Body beneath 

 and legs dingy light brown. 



$ Ovipositor short, scarcely projecting beyond the tips of the 

 elytra ; dorsal plate tapering and rounded at the tip. 



Forests of the Tapajos, In markings this species much re- 

 sembles Leiopus contemptus (Chevrolat, MS.) from Mexico, which 

 is a Nyssodrys allied to N. corticalis*. 



5. Nyssodrys spreta, n. sp. 

 N. oblongo-ovata, parum convexa, sordide fulvo-brumiea, cinereo 

 maculata : thoracis spinis lateralibus conicis, subuncinatis, prope 



* Nyssodrys contempta. Oblonga, convexiuscula, postice attenuata ( ^ ). 

 Caput cinereo-fulvum, vertice fusco trimaculato. Antennae rufes- 

 centes, tomento cinereo vestitae, articulis (duobus basalibus exceptis) 

 apice nigris. Thorax usque ad apices spinaruni lateralium dilatatus ; 

 spinis brevibus, conicis, prope angulos posticos sitis ; dorso cinereo, 

 fusco trivittato. Elytra apices versus paulo attenuata, subtransverse 

 sinuato-truncata, passim punctata, utrinque leviter bicostata ; sordide 

 fulva griseo canoque varia, utrinque plagis elongatis tribus fuscis no- 

 tata. Corpus subtus griseo vestitum. Pedes grisei, tibiis apice tar- 

 sisque supra nigricantibus. (? Segmento dorsali apicali obtuso, ven- 

 trali late emarginato. Long. 4| lin. c? . Hab. Mexico. Coll. Bates. 



The following common South- Brazilian species also belongs to this part 

 of the genus Nyssodrys : — 



Nyssodrys lignaria. Oblongo-ovata, convexiuscula. Caput cinereum. 

 Antennae rufescentes, cinereo vestitae, articulis (2 basalibus exceptis) 

 apice nigris. Thorax breviusculus usque ad apices spinarum latera- 

 lium dilatatus, spmis magnis conicis acutis, ab angulis posticis paulo 

 distantibus; dorso fusco-cinereo, medio maculis quatuor vel vittis 

 duabus fulvis. Elytra postice paulo attenuata {$) vel oblongo- 

 ovata ( $ ), subtransverse breviter truncata, utrinque leviter bicostata, 

 passim punctata ; sordide grisea vel brunnea fulvo fuscoque maculata, 

 utrinque plaga majore cana laterah. Corpus subtus cinereo vestitum. 

 Pedes nigricantes. <? Segmento dorsah apicali truncato, ventrali late 

 emarginato. ? Stylo brevissimo, segmento dorsali attenuate, apice 

 rotundato, ventrali truncato. Long. 4-4 f lin. (? $ . Hab. Rio 

 Janeiro (D. Squires). Coll. Bakewell., Bates., &c. 



