AMERICAN COLEOPTERA. S3 



and sparse on the disk, a little closer at sides. Elytra nearly three times 

 as long as the prothorax, slightly wider behind, finely punctured, 

 costag distinct but scarcely elevated, each with a somewhat irregular 

 row of finer punctures; intercostal all rather wide and confusedly 

 punctured. Body beneath closely and a little more coarsely punctate 

 at sides, sparsely and finely at middle. Upper tooth of front tibia 

 strongly ante-median; hind thighs slender; tarsal joints clothed toward 

 the apex of the under surface with dense fulvous hairs; ungual tooth 

 subapical, obliquely truncate, its tip about twice as distant from the 

 base as from the apex of the claw. Length 8.6-9.2 mm.; width 

 4.7-4.9 mm. 



Arizona (Huachuca and Chiricahua Mountains), Schaefler; 

 Beyer and Hubbard and Schwarz collections. 



This is the largest of our non-pubescent species with angu- 

 late clypeus, and may easily be recognized by its size, sparse 

 and fine punctuation, mental and tarsal characters. There 

 seems to be very little sexual difference in tarsal vestiture. 

 In the male the terminal joint of the maxillary palpi is sub- 

 compressed, dilated, its inner margin strongly rounded; in the 

 female elongate-oval or subcylindrical, with apex more or 

 less obliquely truncate. 



85. D. polita n. sp. 



Oblong-ovate, rufotestaceous to piceous, surface polished and 

 strongly shining, with scarcely a trace of alutaceous sculpture. Mental 

 declivity quite strongly oblique, beginning at anterior third, distinctly 

 margined behind. Clypeal margin rather strongly reflexed, emar- 

 ginate at middle, the limiting angles quite variable, usually quite 

 distinct or even sharply defined and with feeble external sinuation, 

 but not infrequently distinctly rounded and without trace of external 

 sinus. Head moderately closely punctate, more sparsely so toward 

 the vertex, clypeus with the punctures closer but not crowded, suture 

 finely impressed. Prothorax two-thirds wider than long, widest at 

 or just behind the middle, sides strongly arcuate, front angles slightly 

 prominent and sharply defined, hind angles obtuse but evident; disk 

 moderately punctate, anterior and middle lateral fovea? distinct. 

 Elytra three times as long as the prothorax, evidently wider behind, 

 costa? moderate, subsutural interspace moderately wide and confusedly 

 punctate, the other intercostal spaces a little narrower, irregularly 

 punctate at least toward the base. Propygidium densely punctate, the 

 submarginal groove feeble or subobsolete; pygidium coarsely densely 

 punctured. Body beneath punctate about as usual. Upper tooth of 

 front tibia submedian, hind thighs rather stout. Ungual tooth very 



TRANS. AM. ENT. SOC, XXXV. MARCH, 1909. 



