Baring 349 



slender, arcuate, nearly smooth, becoming closely punctulate basally and 

 just visibly longer than the prothorax, which is a third wider than long, 

 the sides very feebly converging and nearly straight, broadly rounding 

 and strongly, arcuately converging in apical third; apex very nearly 

 half as wide as the base, having a smooth margin; punctures moderately 

 strong, very close but not confluent, the median line obliterated; basal 

 lobe more narrowly rounded; scutellum small, transverse, unimpressed 

 but with two or three punctures; elytra two-fifths longer than wide, 

 not wider than the prothorax, except at the rather prominent humeri, 

 and nearly two-thirds longer; grooves moderate, with the small and 

 more distant punctures bearing similar pale hairs, the intervals about 

 three times as wide as the grooves, with rather strong, not very coarse 

 and somewhat close-set punctures, either loosely confused or in single 

 line; setae small, pale; abdomen with close-set punctures, rather coarse 

 laterally, smaller and less close medially. Length (9) 3-9 mm.; width 

 1.7 mm. Montana (locality unrecorded). 



This distinct species differs from any other of the millepora group 

 in having moderately confused or single series of rather small but 

 conspicuous interstitial punctures, 



*Onychobaris chihuahuae n. sp. — Oblong-suboval, parallel, somewhat 

 convex and shining, black throughout, the tibiae and antennae rufo- 

 piceous; beak rather slender, broadly arcuate, finely but strongly, closely 

 punctate, a little shorter (cf) or slightly longer (9 ) than the prothorax, 

 the latter two-fifths wider than long, the sides rounding in at base, 

 thence feebly converging, broadly rounded in about apical third; at 

 about the middle there is frequently a feeble sinuation; apex briefly 

 tubulate, half as wide as the base; punctures strong though only moder- 

 ately coarse, very close, the narrow smooth median line imperfect or 

 obliterated; basal lobe short, broadly arcuate, the scutellum slightly 

 transverse, nearly smooth; elytra three-sevenths longer than wide, not 

 distinctly wider than the prothorax and fully three-fourths longer, the 

 sides subparallel, gradually rounding behind the middle, the humeral 

 callus rather prominent; grooves moderately coarse, deep; intervals 

 alternately more than, or barely, twice as wide as the grooves, the punc- 

 tures not very coarse but deep, somewhat close and conspicuous, con- 

 fused on the broader, in single series on the narrower, intervals, the setae 

 not evident; abdomen moderately closely, rather strongly punctate, 

 more finely and loosely medio-basally, where there is a rather deep oval 

 impression in the male; anterior femora with a feeble obtuse angulation 

 beneath. Length (cf 9) 4.0-4.9 mm.; width 1.75-2.0 mm. Mexico 

 (Colonia Garcia, Sierra Madre Mts., Chihuahua), — Townsend. Eight 

 examples. 



A large and conspicuous species, not closely allied to any other, 

 distinguishable by its oblong form, shining surface and invisible 

 elytral setae; it may be placed near molesta among those hitherto 

 described, but differs in its more elongate outline, much less rounded 



