234 MEMOIRS ON THE COLEOPTERA 



tip, rather strongly elevated but gradually evanescent laterally; 

 punctures small and very sparse, becoming coarse but not dense along 

 the base, except medially, and also anteriorly between the fovea and 

 the apex; scutellum moderate, obtusely ogival, very smooth; elytra 

 only between a fifth and sixth longer than wide, widest and evidently 

 dilated at about apical third, a fourth wider than the prothorax 

 and but slightly more than twice as long, very obtusely rounded in 

 only about apical fourth of the length; three double sets of im- 

 pressed lines sufficiently evident, but the sculpture otherwise is 

 almost completely obsolete, consisting of excessively minute 

 remote punctulation, stronger and closer on the apical declivity 

 below the umbones; pygidium large, nearly smooth, a little more 

 convex above than below the middle, closely punctured and pu- 

 bescent at the lateral ends and also toward base throughout the 

 width; hind tarsi slender, very nearly as long as the tibiae. Length 

 (d") 32.5 mm.; width 18.7 mm. Mexico (Tepehuanes, Durango), 

 -Wickham *durangoensis n. sp. 



Body nearly as broad but more pyriform. moderately shining, black, the 

 elytra dark castaneous, the under surface and legs pale and bright 

 rufous; head (cT) rather more than two-fifths as wide as the pro- 

 thorax, strongly and densely punctato-rugose, the clypeus equally 

 coarsely so but more discretely, the clypeal apex rather broad and 

 very obtuse; transverse ridge less coarse or elevated than in the 

 preceding but otherwise nearly similar; anterior ocular canthus 

 prominent, somewhat angulate posteriorly toward tip; mandibles 

 with the anterior tooth very distinct, rounded, the posterior also 

 rather evident though very obtuse; prothorax not three-fifths wider 

 than long, widest at about the middle, the sides thence very feebly 

 converging to the narrowly rounded basal angles and strongly con- 

 verging anteriorly, the apical sinus feebly arcuate medially trans- 

 verse medially in the preceding; cavity large and deep, more than 

 a third the width and about three-fifths the length, coarsely but 

 shallowly vermiculato-rugose, this sculpture also extending laterally 

 to the anterior angles; surface elsewhere sparsely, rather unequally 

 and distinctly punctate, the punctures becoming very coarse and 

 subconfluent basally, the median line deeply impressed toward 

 base; tubercle moderate, strongly binodulose; scutellum wider than 

 long, smooth, very obtuse; elytra scarcely an eighth longer than wide, 

 much expanded behind basal two-fifths and fully three-sevenths 

 wider than the prothorax, circularly rounded in fully apical half; 

 sculpture nearly as in the preceding, except that even the three 

 double sets of fine impressed lines are barely evident; pygidium 

 large, slightly more than twice as wide as long, the upper half 

 broadly convex and in great part finely punctured and pubescent, 

 the lower half obliquely sloping but barely at all concave, nearly 

 smooth, though with rather coarse remote punctures toward the 

 apex, becoming confluent at the lateral ends; hind tarsi evidently 

 shorter than the tibiae. Length (cf) 33.0 mm.; width 18.2 mm. 

 Arizona (probably southern). Levette collection, .inflatus n. sp. 



6 Oblong, feebly inflated behind and subequally in the sexes, shining, 



