H. C. FALL. 169 



pressed tubercle. A similar structure has been noticed in sordidam 

 and curticorne, and here, as well as in the two latter species, its 

 presence seems independent of sex. In some examples the surface, 

 especially of the elytra, is seen, when the pubescence is removed, to 

 be quite highly polished ; this, however, is not always the case. 

 There are no sexual differences observable in the material at hand. 



95. A. disparipes n. sp.— Moderately elongate, black ; elytra with greenish 

 lustre; anterior femora and all the tibiie rufous; pubescence rather fine, not very 

 conspicuous. Beak ( % ) slender, a little shorter than the head and prothorax, 

 cylindrical, not strongly arcuate, very feebly dilated, fine sculpture reaching 

 nearly to the apex, which is moderately shining ; punctuation rather strong and 

 close, but not coarse. AntenutB rather short, first joint paler at base, about as 

 long as the next two and not quite reaching the eye, 5-8 increasingly transverse, 

 the club equal in length to the six preceding joints. Front punctate; eyes not 

 very prominent. Prothorax a little wider than long, width a little behind the 

 middle equal to the base; sides rather feebly arcuate behind the apical constric- 

 tion; surface moderately strongly, closely punctate ; basal fovea small, elongate. 

 Elytra about one-half longer than wide, a little wider at the middle ; humeri 

 rather prominent; striae not deep; intervals flat, at least twice as wide as the 

 striiB. Beneath moderately punctate. Length 2 mm. ; .08 inch. 



% . Sutural tips strongly rounded : first joint of middle and hind tarsi with 

 an acute sjiiniform process; middle femora strongly incrassate. 

 9. Not seen. 



Hab. — New Mexico (Las Cruces). 



Described from a single male in Dr. Hamilton's collection. Evi- 

 dently allied to spinipes, but perfectly distinct, and withal one of 

 the most remarkable species in our fauna. 



96. A. »»piiiipe!$ n. sp. — Moderately elongate, black, rather sparsely pubes- 

 cent. Beak nearly or quite as long as the head and prothorax, not stout, suhcylin- 

 drical, not dilated, finely sculptured and dull almost to the ape,^, which is more 

 or less shining; punctuation distinct, coarser at the sides. Antennae more or less 

 piceous brown at the base, first joint nearly as long as the next three, second 

 reaching the eye. Front punctate, a little wider than the tip of the beak ; eyes not 

 prominent. Prothorax usually noticeably wider than long, sometimes as long as 

 wide, widest in front of the base; sides moderately strongly arcuate behind the 

 apical tubulation ; punctuation moderate; basal fovea small. Elytra about one- 

 half longer than wide, a little wider at the middle than at the humeri, which aie 

 rather prominent; intervals nearly flat or feebly convex, scarcely twice as wide 

 as the strise. Beneath neither coarsely nor closely ]ninctate. Length 2-2.3 

 mm. ; .08-. 09 inch. 



^. First joint of middle an<l hind tarsi with a sinniforn process; sutural 

 angles rounded. 

 9 . Not seen. 



TRANS. AM. ENT. SOC. XXV. (22) J>KCEMBER, 1898. 



