152 Mr. H. W. Bates on the Longicorn Coleoptera 
_ Head tawny, vertex with three dusky vitte. Antenne 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 vittz, 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; surface 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. 
2 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. 
NV. oblongo-ovata, parum convexa, sordide fulvo-brunnea, cinereo 
maculata: thoracis spinis lateralibus conicis, subuncinatis, prope 
* Nyssodrys contempta. Oblonga, convexiuscula, postice attenuata ( ¢ ). 
Caput cinereo-fulvum, vertice fusco trimaculato. Antenne rufes- 
centes, tomento cinereo vestite, articulis (duobus basalibus exceptis) 
apice nigris. Thorax usque ad apices spmarum 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. 43 lin. ¢. 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. 
Antenne rufescentes, cinereo vestite, 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 (2 ), subtransverse breviter truncata, utrinque leviter bicostata, 
passim punctata ; sordide grisea vel brunnea fulvo fuscoque maculata, 
utrinque plaga majore cana laterali. Corpus subtus cinereo vestitum. 
Pedes nigricantes. g Segmento dorsali apicali truneato, ventrali late 
emarginato. Stylo brevissimo, segmento dorsali attenuato, apice 
rotundato, ventrali truncato. Long. 4-43 lin. ¢ 2. Hab. Rio 
Janeiro (D. Squires). Coll. Bakewell., Bates., &c. 
