of the Amazons Valley. ‘35 
of the preceding, being narrow and linear, but tapering towards 
the apex of the elytra. The head has an elongated crown, or, 
in other words, is prolonged horizontally ; and the forehead in 
the typical species is directed obliquely towards the edge of the 
prosternum. The upper reniform lobe of the eyes is very nar- 
row. The antenne are not longer than the body, and are closely 
approximated at their bases ; but the antenniferous tubercles are 
not elevated or armed; the antennal joints are short, thick, and 
setose, the bristles on the under surface being longest; the 
basal joint is thickened from the base, and of equal breadth 
thence to the apex. The legs are short and stout, and the claw- 
joint of the tarsi is about equal in length to the remaining joints 
taken together. The elytra are briefly sinuate-truncate, and 
dentate at the apex. 
1. Dorcasta oryx, Pascoe. 
Dorcasta oryx, Pase. Trans. Ent. Soe. n. s. iv. p. 264. 
D. sublinearis vel attenuato-elliptica, fusca, griseo tomentosa ; capite 
thoraceque vitta laterali lineaque dorsali fulvis; elytris utrinque 
fulvo trilineatis, apice oblique sinuato-truncatis, angulis acutis ; 
corpore toto setoso ; capite elongato, infra valde retracto. Long. 
33 lin. la 
Abundant on dry twigs in hedges, Santarem. The Hippopsis 
dasycera of Evichson (Schomburgk’s Reise in Brit. Guiana, 
yol. iii.) is evidently a Dorcasta closely allied to D. oryz, if not 
the same species. 
2. Dorcasta lignea, un. sp. 
D. linearis, grisea, capite thoraceque lineis duabus dorsalibus, regione 
scutellari et elytrorum vitta lata curvata fusco-nigris ; capite elon- 
gato, infra retracto; elytris striato-punctatis, subcostatis, apice 
oblique sinuato-truncatis, angulis externis valde productis crassis 
obtusis: corpore haud setoso. Long. 4 lin. 
Head prolonged above and retracted beneath, as in D. oryz ; 
forehead clothed with tawny-grey pile; vertex and occiput dingy 
tawny, lineated with black; upper reniform lobe of the eyes 
extremely attenuated in the middle; vertex punctured. An- 
tennz about as long as the body, clothed with short sete ; basal 
joint oblong, angular; colour blackish, bases of joints greyish. 
Thorax convex in front ; surface punctured, dingy tawny; sides 
each with a light-grey line; centre with two flexuous blackish 
lines extending to the head and meeting on the crown. LElytra 
free from setz, slightly tapering from base to apex, the latter 
obliquely sinuate-truncate, with the outer angles produced into 
vertically thickened lobes; surface with coarse punctures ar- 
ranged in lines, some of the interstices subcostate ; colour dingy 
grey ; the scutellar area and a broad streak, curving from each 
3% 
