90 H. C. FALL. 



Ungual tooth moderate, sub-truncate, strongly post-median, its tip 

 rather more than twice as far from the base as from the end of the 

 claw. Length 7 mm.; width 3.4 mm. 



Hab. — Copper mines of the Gila, Dr. Webb. 



The above description is made from the type. With it is 

 a second specimen which agrees perfectly except in being 

 slightly smaller, also two other examples which are smaller 

 and more ovate, and were evidently taken by LeConte to be 

 females of the same species. While I cannot positively deny 

 this, it seems to me very unlikely. The two specimens are 

 apparently females, as indicated by the stouter hind thighs, 

 but the eyes are relatively larger than in the male type, being 

 separated on the front by a little less than three times their 

 own width; the clypeus is not appreciably sinuate externally, 

 the punctuation of the head is denser, the front is impressed 

 at middle and the elytral punctuation is sparser and finer. 

 These specimens seem very near my confusa, and I am dis- 

 posed for the present to regard them as a variety of that 

 species. 



93. D. senea Blanch. 



Elongate-oblong, not or but slightly wider posteriorly; greenish- 

 black; elytra, tibiae, tarsi and front of clypeus brown or brownish 

 testaceous, the elytra with viridi-seneous surface lustre; elytra densely 

 rather coarsely punctate, prothorax more finely and less densely so, 

 surface shining, the elytra feebly minutely alutaceous. Mentum de- 

 clivous from anterior third, declivity margined behind. Clypeal mar- 

 gin sharply angulate, truncate or emarginate at middle, the angles 

 prominent and with distinct external sinuation at least in the male; 

 head densely punctate, clypeal suture finely or scarcely impressed, 

 feeble or obsolete at middle. Prothorax varying from a little less than 

 one-half to a little more than one-half wider than long, widest at or 

 just behind the middle, sides moderately strongly arcuate, more con- 

 vergent in front, hind angles very obtuse and not sharply defined, 

 punctuation somewhat variable, usually moderately close, the punc- 

 tures distant from a little less to a little more than their own diameters. 

 Elytra two and two-thirds times as long as the prothorax, costae fairly 

 distinct but rather narrow, intercostal spaces all wide and coarsely 

 densely punctate. Propygidial marginal groove obsolete. Body be- 

 neath punctate about as usual. Upper tooth of front tibia slightly 

 ante-median in position. Ungual tooth rather slender, not or but 

 little truncate, its apex about three times as distant from the base 

 as from the end of the claw. Length 6-6.6 mm.; width 2.9-3.25 mm. 



