60 H. C. FALL. 



so, or only toward the base in the outer ones. Metasternum moderately- 

 punctured at sides, sparsely at middle; abdomen sparsely punctate 

 even at sides. Upper tooth of front tibia nearer the base than apex; 

 ungual tooth post-median, its tip about two-thirds as far from the 

 point as from the base of the claw. Length 9-10 mm.; width 4.6-5 mm. 



Brownsville, Texas. Taken in some numbers by Messrs. 

 Schaeffer and Beyer. 



The cylindrical form, broad thorax and relatively narrow 

 head, with widely reflexed clypeus, give this species a quite 

 distinctive facies. The impression or cicatrix of the terminal 

 joint of the maxillary palpus is small and not at all eroded. 



51. D. sulcatula n. sp. 



Rather robust, oblong-ovate, moderately shining, elytra finely 

 alutaceous, pro thorax barely visibly so. Mentum flat posteriorly, 

 declivity beginning at the anterior two-fifths, strongly margined. 

 Clypeus sinuato-rotundate, strongly widely reflexed; clypeal suture 

 fine, widely obliterated at middle; front evenly subconvex, punctua- 

 tion close but not dense. Prothorax slightly more than three-fifths 

 wider than long, widest at middle, sides strongly convergent and nearly 

 straight anteriorly, a little convergent and very broadly arcuate behind, 

 all angles obtuse but well defined; punctures fine, separated by from 

 one to two times their own diameters, a little sparser at the middle 

 of the disk as usual. Elytra not quite two and three-fourths times as 

 long as the prothorax, two-sevenths longer than wide; costas moderately 

 distinct, first intercostal space rather sparsely confusedly punctate; 

 second variable, punctuation either quite irregular or only slightly so; 

 humeral interval with confused punctuation. Pygidium sparsely punc- 

 tate and with a shallow median longitudinal sulcus. Beneath finely 

 punctate, very sparsely so at middle, not very closely at sides. Upper 

 tooth of front tibia submedian, perhaps a trifle nearer the base than 

 the apex; ungual tooth obviously post-median, its tip about three- 

 fourths as distant from the point as from the base of the claw. Length 

 8.9-10.5 mm.; width 4.9-5.8 mm. 



Hab. — Texas; El Paso, Texas; Mesilla, New Mexico; Arizona 

 (Liebeck coll.). Nearly all specimens are from the vicinity of 

 El Paso, Texas, where the species appears to be not uncommon. 



The impressed line of the pygidium, though seemingly a 

 trivial character, appears to be very constant and is, with the 

 broadly reflexed clypeus, sufficient for the recognition of the 

 species. 



