Coleopterological Notices, V. 405 



as long as the body, stouter than in hreripennis, the outer joints more strongly 

 obconical, the tenth scarcely more than twice as long as wide. Prothorax 

 minutely but closely, strongly and evenly punctate, evenly convex, nearly 

 as in brevipennis but with the sides broadly constricted toward base, becoming 

 nearly parallel for some distance before the basal angles, which are right and 

 not blunt; base broadly, feebly sinuate, narrower than the apex, the latter 

 feebly bisinuate; disk simply feebly subexplanate from the fovea to the basal 

 angles, not in the least reflexed, declivous to the edge from the lateral obtuse 

 angulations to the apex; lateral fovese large and very deep, the bottom punc- 

 tiform. Scutellum large, very densely and more finely punctate. Elytra as 

 long as wide, not quite twice as long as the prothorax, and, near the apex, 

 about one-fourth wider ; humeri broadly rounded to the base of the prothorax, 

 but slightly exposed at base ; sides straiglit, divergent ; disk strongly, evenly, 

 moderately closely punctate. Abdomen subobsoletely punctulate. Lecjs moder- 

 ate in length, stouter and shorter than \\\ brevipennis. Length 4.7-5.0 mm. ; 

 ■width 1.9-2.0 mm. 



Colorado. 



The two specimens represent a species allied to hi^evipennis but 

 differing in the much smaller size, relatively longer elytra, stouter 

 antennfe and legs, deeper pronotal impressions and nnreflexed lateral 

 edges of the pronotura, as well as in the sparser, finer punctures of 

 the head and the male sexual characters at the ventral apex. The 

 anterior tarsi of the male are more strongly dilated toward base 

 than in brevipenins, and both the anterior and intern)ediate are 

 papillose beneath. As in rvfitarsis the elytra are distinctly longer 

 in the female than in the male. 



OROBAXUS LeConte. 



In view of the radical difference in palpal structure, the approxima- 

 tion of this genus to Lesteva is very remarkable. It resembles Les- 

 teva in the very slender cylindrical posterior tarsi, with the basal joint 

 subequal to the next two, in the filiform antennae, duplex labrum, 

 and in general appearance, but the spinules of the tibiae are replaced 

 by a few long slender flexible setae, and the maxillary palpi are short 

 stout and densely pubescent, with the fourth joint small slender and 

 subulate. The pronotum is feebly impressed at the sides, thus con- 

 forming partially to the general law affecting all the Californian 

 allies of Lesteva. The tl»ree species may be separated as follows: — 



Eyes smaller, subequal in size to the tempora and not more prominent ; out- 

 line and humeri as in njipes. Rocky Mts simulator Lee. 



