. CENTRINOPUS. 311 
excavate down the middle inthe g. Prosternum armed with two acute, downwardly-directed, conical 
tubercles, and also deeply excavate, in the 3, the excavation shallower in the 9, the transverse subapical 
groove deeply impressed behind the eyes, anterior coxe narrowly separated. Tibie strongly unguiculate 
_in both sexes, 
Length 24-21, breadth 1-1/3, millim. (¢ 9.) 
Hab. Mexico (Druga, in Mus. Brit.: 3 2), Cuernavaca (H. H. Smith: 3 ). 
Two males and one female. Near C. alternatus, the brown scales predominating on 
the upper surface, the prothorax faintly trivittate, the white scales on the elytra widely 
scattered and not condensed into lines or spots. 
8. Centrinopus furfurosus, sp. n. 
Elliptic, narrow, black, the antenne, tip of the rostrum, and legs more or less ferruginous; densely squamose, 
the scales yellowish-white above and white beneath, those on the elytra oval and arranged in three rows 
down each interstice, the first with two rows only. Rostrum arcuate, a little longer than the head and 
prothorax, thickened and squamose at the base, closely punctate, smoother at the tip, the antenne inserted 
behind the middle. Prothorax transverse, subconical, densely, finely punctate. Elytra finely punctate- 
striate, the interstices densely punctulate. Prosternal excavation deep, arcuate anteriorly. Anterior 
coxe narrowly separated. Tibize feebly unguiculate. 
Length 21, breadth 1,4, millim. ( 92.) 
Hab. Mexico (Truqui, in Mus. Brit.). 
One specimen. This species is densely squamose, like Gereus (Centrinus) albotectus, 
Casey, which also has oval scales on the elytra; but it is narrower, the mandibles are 
rounded externally, the anterior coxe are more approximate, and the prosternum has 
a deep semicircular excavation. The dense, uniform, coarse, yellowish-white vestiture 
separates C. furfurosus from its nearest allies. 
4, Centrinopus erythropus, sp. n. 
Elliptic, rather convex, black, the rostrum, antennse, and legs wholly rufous ; thickly clothed with small 
narrow whitish scales, which are a little coarser and more condensed on the median lobe and sides of the 
prothorax, on the scutellum, and along the suture of the elytra, the vestiture of the under surface dense 
and pure white. Head closely punctate; rostrum a little longer than the head and prothorax, arcuate, 
rather stout, shining, sparsely punctate, much smoother in the 2, the antennz inserted at (¢ ) or behind 
(Q) the middle. Prothorax strongly transverse, rounded at the sides from near the base, constricted 
and narrowed in front; densely, finely punctate, and with an incomplete, smooth, raised, median line. 
Elytra finely striate, the interstices densely punctate. Deneath densely punctate; first ventral segment 
hollowed down the middle in the ¢. Prosternum unarmed in the g, slightly hollowed down the middle, 
the transverse subapical groove deeply impressed. Anterior coxe narrowly separated. Anterior tibise 
finely unguiculate. Third tarsal joint large. 
Length 22-22, breadth 13-1} millim. (¢ @.) 
Hab. Mexico (Truqui, in Mus. Brit.: @), Hidalgo and Mexico city (Barrett, in 
U.S. Nat. Mus.: ¢ ). 
Three specimens, two of them partly abraded. More convex than C. alternatus, the 
rostrum, antenne, and legs clear rufous, the rostrum of the female smoother and bare 
from near the base, the prothorax strongly rounded at the sides and more constricted 
in front, the vestiture fine, the dense white scutellar spot continued down the suture. 
