CERAMBYCID.E 265 



brown throughout, sculptured as in spissicornis but still more finely; 

 head relatively a little smaller, the very large eyes similar though 

 still more prominent, separated by barely over one-half more than 

 their own width; median line much more finely and feebly though 

 evidently canaliculate; antennae (cf ) of the same structure and with 

 similar dense erect vestiture but barely three-fourths as long as the 

 body and less incrassate basally through the basal five joints, second 

 joint relatively longer than in the preceding, twice as long as wide 

 and distinctly more than half as long as the third, the latter less 

 greatly exceeding the fourth; prothorax similarly transverse but 

 differing notably in shape, not parallel, the sides rounding strongly 

 at apex, thence parallel and nearly straight from apical fifth to 

 barely behind the middle, then rounding and strongly converging 

 to the base, which is very much narrower than the apex, the densely 

 punctulate surface much more even, the impressions of the preceding 

 barely traceable; scutellum more obtuse; elytra similarly a little 

 wider than the prothorax, very elongate but not at all wider at the 

 humeri, the sides straight, the apex conjointly circularly rounded; 

 legs more slender and a little shorter, the hind tarsi not quite three- 

 fifths as long as the tibiae, similar in general structure but very much 

 more slender. Length (cf) 16.7 mm.; width 4.2 mm. New Mexico 

 (Las Vegas),- Meeske gracilipes n. sp. 



It would seem as though the tuberculiform swelling at the hinder 

 part of the thoracic impression of impressa, would have been alluded 

 to by LeConte, even in the very short diagnosis of aspera, if present 

 in the latter; it is conspicuous in impressa but almost obsolete 

 and with much more anterior position in rectipennis. 



Criocephalus Muls. 



The following three species belong to the asperatus group, having 

 the third joint of the hind tarsi emarginate only at apex: 



*Criocephalus honduranus n. sp. Form, dark coloration and general 

 sculpture nearly as in asperatus but less stout; head and antennae nearly 

 similar, except that the dense punctures of the former are finer and the 

 basal dorsal swelling more pronounced, also in that the antennae are a little 

 longer and more coarsely sculptured, having the fringe along the under 

 part of all the joints nearly as in the male of asperatus; prothorax dis- 

 tinctly different, being very nearly as long as wide, hexagonal, angulate 

 at the middle, the surface with a large deep rounded concavity at the 

 middle near the base, a deep elongate concavity enclosing a shining 

 impunctate anterior spot near each side, and a transversely crescentic 

 subapical concavity; surface minutely, extremely densely punctate but 

 with only very few small and widely dispersed granules anteriorly, be- 

 coming but slightly more pronounced toward the sides; elytra nearly 

 similar but with the raised lines more feeble; legs a little shorter but with 

 notably longer tarsi, the posterior more than three-fourths as long as 



