AMERICAN COLEOPTERA. 69 



64. D. trementina n. sp. 



Oblong, subparallel, dark brown, only moderately shining, both 

 thorax and elytra with fine alutaceous sculpture. Mental declivity 

 beginning near the middle, strongly margined. Clypeal margin rather 

 feebly sinuate at middle, arcuate at sides; head densely punctate, 

 front nearly flat at middle. Prothorax not quite three-fourths wider 

 than long, sides broadly arcuate, subparallel posteriorly; punctuation 

 fine, sparse at middle, rather close laterally. Elytra barely one-fifth 

 wider than the prothorax and about two and two-fifths times as long, 

 punctuation forming nearly regular rows except in the sutural inter- 

 space, a slight irregularity toward the base in the second and third 

 intercostal intervals. Body beneath sparsely punctate, more closely 

 at sides of metasternum and both coarsely and closely at sides of 

 fifth ventral. Upper tooth of front tibia submedian; middle tarsus 

 subequal in length to the tibia, hind tarsus shorter than the tibia. 

 Ungual tooth broad, obliquely truncate, its tip nearly twice as distant 

 from the base as from the point of the claw. Length 9.5 mm.; width 

 5.1 mm. 



The type is from La Trementina, New Mexico (Cockerell) ; 

 a second example is from Tucson, Ariz. (Nat. Mus. collection). 



65. D. punctulata Horn. 



Robust, black, moderately shining; upper surface minutely alu- 

 taceous and with a system of very fine punctures occupying the 

 intervals between the usual punctures. Mental declivity narrow, 

 steep, strongly margined. Clypeal margin sinuate at middle, angles 

 broadly rounded; clypeal suture distinctly impressed, broadly pos- 

 teriorly arcuate at middle; head densely punctate; front nearly flat. 

 Prothorax three-fifths wider than long, fully as wide at base as at 

 middle, sides subparallel in basal half, moderately rounded at middle, 

 convergent and nearly straight anteriorly; front angles obtuse, hind 

 angles nearly rectangular; punctuation rather fine, the punctures 

 separated by about their own diameters at sides; and by from one 

 to three times their diameters at middle. Elytra a little wider pos- 

 teriorly, not quite two and three-fourths times as long as, and three- 

 tenths wider than the prothorax; costas distinct, all the intercostal 

 intervals wide and confusedly punctate. Body beneath densely but 

 not coarsely punctate at sides, sparsely at middle. Upper tooth of 

 front tibiae submedian; hind thighs impunctate at middle. Ungual 

 tooth subapical, obliquely truncate, its tip about three times as far 

 from the base as from the point of the claw. Length 13.5-15 mm.; 

 width 7. 5-8. .3 mm. 



Lower California, San Jose del Cabo (Fuchs) ; Santa Rosa, 

 San Felipe, El Taste (Beyer). 



The very fine punctuation of the upper surface which 



TRANS. AM. ENT. S0C, XXXV. MARCH, 1909. 



