AMERICAN COLEOPTERA. 57 



47. D. brevidens Lee. 



Oblong, moderately elongate, strongly convex, black or brown, 

 shining, surface polished with only faint trace of alutaceous sculpture. 

 Mentum declivous in front, summit of declivity elevated and setaceous. 

 Clypeal margin slightly sinuate at middle, rounded at sides; clypeal 

 suture finely impressed, a little more deeply so at sides and smoother. 

 Head densely punctate, front nearly evenly broadly convex. Pro- 

 thorax one-half wider than long, widest at middle, sides subangulate, 

 nearly straight and feebly convergent posteriorly, more strongly con- 

 vergent and straight in front, angles well defined but obtuse. Punc- 

 tuation rather sparse, not coarse, the punctures separated by about 

 their own diameters at sides, and by from one to two times their own 

 diameters at middle; middle and anterior lateral foveae distinct, the 

 latter somewhat more distinct from the side margin than the former 

 and close to the front margin. Elytra two and one-half times as long 

 as the prothorax, and one-third longer than wide, costas feebly in- 

 dicated, punctures in regular rows except in the broad subsutural 

 interspace. Punctuation beneath moderate, sparse at middle, closer 

 at sides. Upper tooth of front tibia? a little nearer the base than the 

 apex; hind thighs very finely sparsely punctate at middle; ungual 

 tooth median, its tip a trifle more remote from the apex than from 

 the base of the claw. Length 9.6-10.5 mm.; width 4.8-5.3 mm. 



The sexes in this species are very easily distinguished, the 

 male having the terminal joint of the maxillary palpi broadly 

 ovate pointed, much less than twice as long as wide, the 

 front and middle femora and tibiee quite densely hairy on the 

 inner side, and the abdomen flattened at middle, with more 

 numerous short erect hairs, especially on the second and 

 third segments. In the female the terminal joint of the max- 

 illary palpi is more elongate oval, nearly or quite twice as 

 long as wide, the legs are normally hairy, and the abdomen 

 convex. 



The type was described from the valley of the Gila. It has 

 been taken at Tucson, Arizona, by Hubbard and Schwarz 

 and Wickham, and at Phoenix by the late Dr. Griffith. 



48. D. fossipalpa n. sp. 



Oblong, moderately stout, scarcely wider posteriorly, brown or 

 nearly black, shining, elytra minutely alutaceous. Mentum trans- 

 versely broadly concave behind, declivous from the anterior third, 

 hind margin of declivity moderately prominent. Clypeal margin 

 rounded, with a rather broad and shallow median sinuation; clypeal 

 suture distinctly impressed, biarcuate or posteriorly sinuate at middle; 



TRANS. AM. ENT. SOC, XXXV. (8) MARCH, 1909- 



