Coleopterological Notices, IV. 537 



large deep rounded, rather close-set punctures which are hut slightly irregular 

 on the third. Abdomen sparsely punctured, but, as usual, densely so at the 

 sides. Length 4.0-4.5 mm. ; width 1.8-2.1 mm. 



Arizona. 



In one specimen the prothorax is inflated and apparently a little 

 wider than the elytra. Two specimens. 



19 Onyctiobaris illex n. sp. — Rather narrowly oval, strongly convex, 

 polished, the pronotum feebly alutaceous, black, the head, beak and legs 

 rufous ; setae very minute, sparse and inconspicuous. Head minutely, sparsely 

 punctate, the punctures slightly less remote anteriorly ; impression feeble, 

 marked by a very narrow polished and impunctate band ; beak somewhat 

 stout, nearly evenly, moderately arcuate, deeply, densely punctate, longitu- 

 dinally rugulose at the sides, almost evenly cylindrical, scarcely longer than 

 the prothorax ; antennae inserted quite distinctly behind the middle, the basal 

 joint of the funicle about as long as the next three, second slightly longer 

 than wide, obconical, remaining joints gradually, moderately transverse and 

 closely coarctate, the club somewhat abrupt, oval, moderate in size. Prothorax 

 scarcely one-third wider than long, the sides broadly arcuate and convergent 

 anteriorly, becoming gradually almost parallel from apical third to the base ; 

 subapical constriction obsolete, the apex fully one-half as wide as the base, 

 the latter straight and transverse, the median lobe one-third of the total width, 

 rounded and prominent; disk rather finely, somewhat closely punctate, with 

 a narrow impunctate line not attaining the apex, the punctures about one- 

 fourth as wide as the scutellum and separated by about one-half of their own 

 diameters, becoming sparser in the middle, especially toward base. Scutellum 

 transversely lunate. Elytra slightly wider than the prothorax and barely 

 two-thirds longer, hemi-elliptical, distinctly longer than wide, the humeri 

 small but decidedly prominent ; disk with rather fine, moderately deep, 

 abrupt striae, the intervals flat, from two to three times as wide as the 

 grooves, sparsely but very unevenly punctate, the punctures rather fine and 

 feeble, more or less transverse, arranged in nearly even single lines on some 

 intervals and more or less confused on others. Abdomen finely, not densely 

 punctate, the last three sutures very deeply excavated except at the sides. 

 Prosternum flat, with a small transverse groove and two short parallel longi- 

 tudinal folds anteriorly, the coxae small and very remote. Length 3.4 mm. ; 

 width 1.6 mm. 



Colorado. 



The single specimen before me represents a species rather closely 

 allied to molesta, differing in its more slender form and in the much 

 finer, sparser and transverse punctuation of the elytra, also very 

 noticeably in its much larger pygidium, the types of both of these 

 species being females. 



