32 Journal New York Entomological Society. [Voi. vn. 



peus very broadly emarginate. Thorax widest a little before the base, not wider than 

 the elytra, sides moderately rounded, surface rather densely punctate, impressions 

 nearly obsolete, the three basal fovese as usual in the group. Elytra with moderately 

 coarsely punctate stride, intervals subequal in width to the stria; on the disk, the ninth 

 and tenth wider. Beneath closely quite strongly punctate, abdomen somewhat .shin- 

 ing and with greenish surface lustre ; last ventral without apical crest. Prosternum 

 with the front margin nearly straight from side to side Length, 5.7-7.6 mm., 

 .23-. 30 inch. 



Habitat: Arizona. 



A small series in the Horn collection without more definite locality. 

 The markings are much like those in ueglecta, but the larger size, more 

 pointed elytra and much more broadly emarginate clypeus will easily 

 distinguish it from either ncglccta or tiihiilus with which it must be as- 

 sociated. The ungual teeth are acute and nearly as long as the claw 

 in the male, less acute and more basal in the female. In neglecta and 

 more notably in tiilnilus the ungual teeth are blunt or even truncate at 

 tip. 



A. stigmata Horn, Proc. Cal. Acad. Sci., IV, p. 370, PL VII, Fig. 2. 



Superficially not distinguishable from the next, which see for a 

 statement of differences. Length, 5.8-8 mm., .23-. 31 inch. 



Habitat : Lower California (San Josedel Cabo), Arizona (Tucson). 



A. bivulnera Horn, Proc. Cal. Acad. Sci., IV, p. 371. 



Distinct by its color from everything else in our fauna except 

 stigmata, from which it is separated, aside from prosternal characters, 

 by the denser recumbent white hairs broadly clothing the sides of the 

 metathorax and abdomen, and the abruptly denser punctuation of the 

 abdomen beginning with the second segment. This last character has 

 been noted previously in pubiventris, and again appears in gibbiila. 

 Length, 6.2-7.5 mm., .25-. 30 inch. 



Habitat: Arizona (Tucson). 



A. versuta Horn, Trans. Am. Ent. Soc, VII, p. 21, PI. I, Fig. 33. 

 The distinguishing characters of this species are the strongly 

 rounded sides of the prothorax which is widest at the middle and a 

 little sinuate before the hind angles ; the strongly sinuate sides of the 

 elytra ; the vestiture, which is relatively longer and finer than in any 

 other species of this group, and the sinuate prosternal margin, the mid- 

 dle sinus limited by more or less prominent cusps. The disparity in the 

 punctuation of the ventral segments mentioned by Horn is scarcely at 

 all appreciable in any of the five examples before me. Length, 6-6.5 

 mm., .24-. 26 inch. 



