AMERICAN COLEOPTERA. 55 



44. D. maeronyeha n. sp. 



Elongate, subovate, quite convex, apparently apterous, black, mod- 

 erately shining, alutaceous sculpture very fine. Mentum flat pos- 

 teriorly, declivous from the anterior two-fifths, summit of declivity 

 acutely raised, with series of seven or eight erect setae. Clypeus un- 

 usually widely reflexed, margin rotundate, with a very feeble median 

 sinuation; clypeal suture moderately impressed, subobsolete for a 

 short distance at middle; front and clypeus uniformly very densely 

 punctate, the former with a rather feeble median longitudinal impres- 

 sion, which is deeper anteriorly. Prothorax one-half wider than long, 

 widest at middle, base a little wider than the apex, sides uniformly 

 strongly arcuate, just perceptibly sinuate at the hind angles, the 

 latter slightly obtuse but sharply defined; front angles not at all 

 prominent; disk uniformly convex, densely punctate laterally, the 

 punctures well separated at middle. Elytra two and one-third times 

 as long as the prothorax, barely one-third longer than wide, subovate, 

 convex, costae rather indistinct, intercostal spaces confusedly punc- 

 tate; interstitial punctures of narrower intervals close. Pygidium 

 very coarsely rugose. Body beneath normally punctate; metasternum 

 short, the length between the coxae subequal to that of the second 

 ventral segment. Upper tooth of front tibiae submedian in position; 

 hind thighs sparsely punctate at middle; claws very long and slender, 

 the tooth small, acute, slightly post-median in position, its tip about 

 three-fourths as distant from the apex as from the base of the claw. 

 Length 9-10.3 mm.; width 4.5-5 mm. 



Hab. — Moqui, New Mexico (type) ; Holbrook, Arizona 

 (Wickham) . 



The metasternum is here not quite as short as in connata, 

 but the elytra seem to be completely connate and the wings 

 are doubtless rudimentary or wanting. 



45. D. pacta Lee. 



Moderately robust, ovate, black, shining, elytra finely alutaceous. 

 Mentum broadly concave posteriorly, declivous from anterior two- 

 fifths, summit of declivity elevated; clypeal margin rather strongly 

 arcuate throughout, clypeal suture nearly straight, somewhat more 

 impressed laterally; front without obvious post-clypeal convexity, 

 scarcely or very feebly bi-impressed, punctuation rather dense, not 

 more so on the clypeus. Prothorax very little less than twice as wide 

 as long, widest at middle, sides strongly arcuate at middle, angles 

 distinct but obtuse; disk with two deep, transversely confluent im- 

 pressions on each side of the middle, these impressions variable, being 

 nearly obsolete in some examples; an impression within the front 

 angles; punctuation rather fine and sparse, not much closer laterally. 



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



