AMERICAN COLEOPTERA. 65 



5S. D. ingenua n. sp. 



Oblong, subovate, rufo-ferruginous, moderately shining, elytra finely 

 alutaceous. Mentum feebly declivous from anterior third or fourth, 

 margin of declivity slightly or scarcely elevated. Clypeal margin 

 sinuato-truncate at middle, with rounded angles; front and clypeus 

 in nearly same plane, the suture distinctly impressed; clypeus closely 

 but not densely punctate, front less closely, the punctures everywhere 

 well separated. Prothorax strongly transverse, about four-fifths wider 

 than long, widest at or very slightly behind the middle, sides mod- 

 erately arcuate, strongly convergent in front, moderately so behind, 

 angles all obtuse, the anterior ones less so and a little prominent; 

 punctuation rather fine, moderately close laterally, sparser toward 

 the middle. Elytra more than three times as long as the prothorax, 

 a little wider posteriorly, costae evident, first intercostal interval with 

 the usual confused punctuation, second and third variable, but usually 

 with the irregularity fairly well marked. Body beneath finely sparsely 

 punctate medially, more closely at sides. Upper tooth of front tibia 

 distinctly ante-median in position; ungual tooth subapical, the tip 

 fully twice as distant from the base as from the apex of the claw. 

 Length 7-9 mm.; width 3.9-5 mm. 



Hab. — Arizona. 



The type is from the Huachuca Mountains, where the 

 species has been taken by Oslar, Schaeffer and Skinner, other 

 specimens are from Ft. Grant (Hubbard and Schwarz), and 

 Prescott (Blanchard coll.). 



59. D. planidens n. sp. 



Oblong-ovate, black, elytra finely but distinctly alutaceous and 

 somewhat dull. Mental declivity long, beginning near the middle, 

 margin elevated and setiferous. Clypeal margin sinuato-truncate at 

 middle with broadly rounded angles; head very densely punctate, 

 clypeal suture subobsolete at middle, no post-clypeal ridge, the front 

 broadly evenly subconvex. Prothorax three-fifths wider than long, 

 widest slightly behind the middle, sides moderately arcuate, very 

 feebly sinuate anteriorly, angles well defined, a little obtuse; punctures 

 separated by rather more than their own diameters at sides. Elytra 

 slightly more than two and one-half times as long as the thorax, very 

 little wider than the thorax at base, gradually wider behind; costal 

 intervals evident but nearly flat; first intercostal space with punctures 

 broadly confused, narrowly so on the others. Punctuation beneath 

 coarser than above, close at sides, sparser and finer toward the middle. 

 Upper tooth of front tibia just visibly nearer the apex than the base. 

 Ungual tooth subapical; outer claw of middle tarsus broadly laminiform 

 basally, the tooth projecting acutely from its anterior edge. Length 

 6.8 mm.; width 3.6 mm. 



TRANS. AM. ENT. SOC, XXXV. (9) MARCH, 1909. 



