NICENTRUS. 313 
and the prothorax is more densely punctate, the punctures on the disc in NV. lineicollis 
being coarse and separated by narrow shining interspaces. Mr. Wickham has sent me 
an example of WV. ingenuus from Iowa, this insect agreeing with some of our specimens 
of WV. linetcollis. The legs are usually ferruginous, rarely infuscate. The antenne are 
inserted near the middle of the rostrum in both sexes. ‘The male has the anterior 
tibie slightly curved and the first ventral segment shallowly depressed down the 
middle. 
2. Nicentrus forreri, sp. n. 
Oblong-ovate, nigro-piceous, the antenne and legs ferruginous; thickly and uniformly clothed with rather 
coarse, narrow, yellowish-white scales, which are arranged in about two rows down each elytral inter- 
stice (the sutural one included, the third with three rows at the base), the scales on the scutellum 
clustered into a conspicuous whitish spot; the vestiture of the under surface denser, coarser, and whitish. 
Head closely punctate; rostrum moderately stout, strongly arcuate, a little shorter than the head and 
prothorax, closely punctate and squamose at the base, the apical half bare, shining, and sparsely 
punctured, the antenne inserted at about the middle, the club ovate. Prothorax broader than long, the 
sides subparallel at the base and arcuately converging from the middle forwards ; densely, finely punctate. 
Elytra a little wider than the prothorax, finely punctate-striate, the interstices rugulosely punctate. 
Beneath densely punctate. Prosternum shallowly foveate in the subapical constriction. Anterior cox 
rather narrowly separated. Legs short; tibie finely unguiculate. 
Length 22-21, breadth 14-114 millim. (@.) 
Hab. Mexico, Presidio (Lorrer). 
Three specimens, apparently all females. Smaller and more densely and uniformly 
squamose than V. Jineicollis, the prothorax densely, finely punctate. | 
3. Nicentrus placidus, sp. n. 
Elongate, narrow, flattened above, black ; thickly clothed with small, narrow, whitish scales, which are 
arranged in two close rows down each elytral interstice, and are somewhat condensed along the sides and 
middle of the prothorax, the vestiture of the intervening spaces on the disc of the latter ochreous, that of 
the under surface rather coarse and white. Head finely punctate, foveate between the eyes; rostrum 
curved, stout, nearly as long as the head and prothorax, closely striato-punctate, in the 2 longer, smoother, 
and more bowed at the base, the antenne inserted at about the middle. Prothorax transverse, rounded 
at the sides anteriorly, constricted in front; densely, finely punctate. Elytra long, a little wider than the 
prothorax, subparallel at the base; finely punctate-striate, the interstices closely punctulate. Beneath 
densely punctate. Prosternum unimpressed behind the transverse subapical groove. 
Length 3, breadth 14 millim. (¢ 9.) 
Hab. Mexico, Xucumanatlan in Guerrero (H. H. Smith). 
One pair. An elongate, small, flattened form, with short prothorax, long elytra, and 
stout, curved rostrum, the vestiture of the elytra arranged in two rows down each 
interstice. A worn female from Omilteme, with the vestiture of the elytra in great 
part ochraceous (except along the suture) and the tibie ferruginous, doubtless belongs 
to the same species. 
N. placidus is of about the same size and shape as N. lineicollis, Lec. (nec Boh.), 
but the prothorax is more transverse and the vestiture of the elytra is closer. The 
mandibles are straight and pointed. 
BIOL. CENTR.-AMER., Coleopt., Vol. LV. Pt. 5, September 1908. 2SS 
