RHYNCHOPHORA. AST 
have the prosternum unarmed, but the metasternum and first ventral segment are 
hollowed down the middle as in the male. 
20 (a). Diastethus hirtimanus, sp. n. 
Rhomboidal, shining, black; glabrous above. Rostrum very long and slender, reaching the posterior 
margin of the metasternum, thickened and rugosely punctate laterally at the base, for the rest sparsely, 
minutely punctate, the antenne inserted at about the basal fifth, the club oblong-ovate and rather small. 
Prothorax short, rapidly, arcuately narrowing from the base, strongly constricted in front, the base 
obliquely foveate on each side of the median lobe ; sparsely, finely punctate. Elytra much wider than 
the prothorax, short, triangular, depressed along the suture ; sharply punctate-striate, the interstices 
broad, flat, each with a few very minute scattered punctures down the middle. Beneath rather coarsely 
and closely punctate. Prosternum bifoveate in front. Femora unidentate. ‘libiz more or less angulate 
near the base externally, the anterior pair ciliate within and strongly sinuate. Tarsal joints 2 and 3 
broad, the claws small and connate at the base. 
Length 22, breadth 1? millim. (¢ ?) 
Hab. Mexico, Rio Balsas (Wickham). 
One specimen, found by Mr. Wickham during the past year. This insect has the 
long slender rostrum of D. gracilirostris and the angular tibie of D. humerosus, but it 
is abundantly distinct from either of them. 
CYLINDROCERUS (p. 237). 
Since the publication of the description of C. longipennis, from the mountains of 
Guerrero (p. 241), I have seen an extremely closely allied form from the Antillean 
Island of St. Vincent *. | 
* Cylindrocerus insularis, sp. n. 
¢. Elongate-rhomboidal, shining, black ; the elytra with a patch of narrow ochreous scales at the base of 
the third interstice and a smaller one at the base of the fifth, and the first ventral segment with a large 
rounded patch of similar scales on each side. Head sparsely punctate, transversely depressed between the 
eyes; rostrum arcuate, a little longer than the elytra, slender, still narrower in its apical third, finely 
punctate, coarsely so at the sides to the points of insertion of the antenne at about three-fifths from the 
pase, the antennal club elongate, acuminate, and nearly as long as joints 3-7 of the funiculus united. 
Prothorax transverse, conical, constricted in front; very sparsely, minutely punctate. lytra much 
wider than the prothorax, moderately long, triangular, transversely depressed before and beyond the 
middle, the humeri swollen ; deeply punctate-striate, the punctures somewhat distant one from another, 
the interstices almost smooth, narrowly subcostate at the apex. Prosternum armed with two upwardly 
curved moderately long spines. Anterior tibi fringed with long ochreous hairs on the inner side from 
the middle to the apex. [Anterior tarsi probably dilated and clothed with long hairs. | 
Length 52, breadth 23 millim. 
Hab. Sr. Vincent, Leeward side. 
One specimen, wanting the anterior tarsi. Nearly related to the Mexican C. longipennis (type of which is 
a 9), but with less elongate, deeply punctate-striate elytra, the third interstice less widened at the base and 
the fifth also with a few ochreous scales at this place, the humeri more prominent, the first ventral segment 
with a large ochreous patch on each side, the antennal club not so stout, &c. M. Bovie has sent me a very 
similar unnamed species from Colombia. 
