48 
Mr. H. W, Bates on 
and a little backwards towards tbe apex^ and by the ex- 
tremely long claw-joint of the tarsi; the third joint of 
the antenna is nearly as long as the four following taken 
together^ and is thickened and cylindrical. 
1. Btictosomus semicostatus. 
Serv. Ann. Soc. Ent. Fr. 1832^ p. 163. 
St. oblongus depressus^ niger^ passim grosse punctatus, 
elytris costis quatuor distinctis. 
Long. 1 unc. 10 lin. B • 
One example^ found near Montes Aureos^ in the in- 
terior^ East of Para. 
Genus Polyoza. 
Serville ; Lacord. Genera^ viii. p. 162. 
1. Polyoza lineata, n. sp. 
P. oblongo-linearis^ rufo-fulva^ elytris utrinque sutura 
et carinis quatuor elevatis_, interstitiis nigris : an- 
tennis ( B ) dimidium corporis vix superantibus, arti- 
culis 3 — 8 basi laminas elongatas emittentibus. 
Long. 11 lin. (c?). 
Besembles in form P. Lacorda.irei ; the head^ palpi, 
mandibles, and eyes offer scarcely any difference : the 
thorax has on each side three teeth, the foremost one 
very small, and the hindmost pointing towards the 
shoulders of the elytra ; its surface is sculptured in a 
raised reticulate pattern. The elytra offer a raised 
suture and four carinae, the interstices of which are of a 
dark colour, the whole surface is finely rugose-punctate, 
and the sutural angle acute, but not spinose. The an- 
tennae are very much shorter than in P. Lacordairei, and 
the long foliaceous appendages to the joints placed more 
closely together. The underface and legs are finely 
punctate-granulate and hairy, and of a paler hue. 
One example, taken in a dead tree at Ega. 
