144 RHYNCHOPHORA. 
what tumid towards the base, which is marked off by a slight arcuate impression. Prothorax elongate, 
the sides straight and subdivergent from the base to the middle, thence narrowed to the apex and little 
rounded; surface with close, strong, variolose punctures, intermingled with finer punctures; the median 
line smooth, subelevated, and abbreviated in front. Elytra markedly wider than the prothorax and twice, 
or more than twice, as long, with shallow striz, the punctures rounded, not very deep ; inner interstices 
feebly convex, the outer flat, all multipunctate, rather obsoletely rugulose, granulate towards the apex, 
and set with distinct uniseriate pale sete. 
Hab. Mexico (Truqui, in coll. Fry). 
Five examples. This species cannot be identified with any given in Leconte’s 
‘Rhynchophora of America north of Mexico,’ of most of which I possess examples. 
2. Hylastes vastans. 
Hylastes vastans, Chap. Syn. Scol. p. 17 (Mém. Soe. Liége, 18738, p. 225) '. 
Hab. Mexico}, Ventanas in Durango (Forrer), Chilpancingo in Guerrero (H. H. 
Smith) ; GuaTEMALA, Quiché Mts. (Champion). 
This species, of which we have received five examples, differs from H. longipennis in 
its slightly smaller size. ‘The rostrum is less prominent and less impressed at the base ; 
the prothorax is more equably rounded at the sides and isa little broader; the punctua- 
tion is deep, not variolose, uniform and less close; the elytra are relatively shorter and 
not so wide at the base in proportion to the prothorax; the interstices are more 
rugulose, and the punctures consequently less evident; at the apex the sete are very 
minute and not readily distinguishable. 
It is allied to a Hylastes from the United States standing in my collection as 
H. gracilis, Leconte, and corresponding with his description (Trans. Am. Ent. Soc. 
1868, p. 174), but it differs in being black instead of piceous-brown, and in having the 
punctures of the elytra stronger and the interstitial rugee more distinctly elevated. 
Division II.—Species with the third tarsal joint widely bilobed, the mesosternum 
prominent. (Hylurgops, Leconte.) 
1. Interstices not alternate towards the apex of the elytra. . . . . . 2 
Alternate interstices elevated and tuberculate towards apex . . . . subcostulatus, Mann. 
2. Elytra black, thinly pubescent towards apex . . . . . « « . . 8. 
Elytra mottled with light scales . . . woe ee we ee es) 6Variegatus, sp. 0. 
8. Prothorax finely granulate, with very short pubescence » +. « « . planirostris, Chap. 
Prothorax strongly punctured, with long pilosity . . . . . . . . %incomptus, sp. n. 
3. Hylastes planirostris. 
Hylastes planirostris, Chap. Syn. Scol. p. 21 (Mém. Soc. Liége, 18738, p. 229) ?. 
Elongate, dull, black, the antennee and tarsi rufescent. Front convex, granulate; the rostrum carinate in the 
