324 Mr. F. P. Pascoe on the 
The following species are believed to be hitherto un- 
described. 
Centrinus ferinus. 
C. ovatus, niger, prothorace elytrisque basi squamis piliformibus 
aureis dense tectis; rostro ferrugineo, arcuato, capite cum pro- 
thorace multo longiore, basi paulo compresso. Long. 2 lin. 
Fab. Parana. 
Ovate, black, prothorax and base of the elytra closely 
covered with golden-yellow piliform scales; rostrum ferru- 
ginous, slender, strongly arched, base slightly compressed ; 
scrobes lateral, beginning at about a third from the base; 
antenne pale brownish yellow; funicle slender, elongate, first 
joint as long as the next two together, the last three turbi- 
nate; club ovate; prothorax moderately convex, ridged in 
the middle from the base, the apex with a linear transverse 
impression; scutellum densely scaled; elytra cordiform, 
slightly broader at the shoulders than the prothorax, deeply 
striate, interspaces flat, obscurely punctured; body beneath 
black, closely covered with silaceous scales; legs pale ferru- 
ginous. 
Centrinus auricollis. 
C. ovatus, niger, prothorace squamis aureis; elytris sutura albo- 
squamosis ; rostro ferrugineo, fere longitudine elytrorum, modice 
arcuato, basi valde compresso. Long, 2 lin. 
Hab. Amazon (Santarem). 
Ovate, black, prothorax closely covered with dark golden 
piliform scales, elytra with the suture covered with white 
scales ; rostrum ferruginous, as long as the elytra, moderately 
curved, more compressed at the base ; the scrobes beginning 
behind the middle; antenne yellowish ferruginous, slender, 
funicle and club as in the preceding; prothorax slightly 
ridged, scutellar lobe somewhat produced ; scutellum oblong ; 
elytra scarcely broader at the shoulders than the prothorax, 
striate, the interspaces indefinitely punctured ; body beneath 
black, covered with silvery white piliform scales. The males 
have short pectoral horns. 
This and the above are not to be distinguished by their 
technical characters from Centrinus proper. 
Centrinus querulus. 
C. ovalis, glaber, nitide niger; prothorace rufo, fere impunctato ; 
rostro prothorace haud longiore, dimidio basali sulcato; elytris 
