North American Rhyncliophora. 239 



not at all inflexed at apex ; sides broadly and distinctly arcuate ; 

 humeri broadly rounded, obsolete ; base broadly angularly emarginate, 

 more noticeably so in the middle ; disk very broadly and strongly 

 convex, rather narrowly and strongly striate ; striae impressed, scarcely 

 one-half as wide as the intervals, with rows of large impressed approxi- 

 mate punctures which are not very well defined ; intervals broadly 

 feebly convex, with very minute sparse irregularly scattered setae. 

 Legs pale cinereous throughout. Length (to end of beak) 15.0 mm. 



New Mexico (Fort Wingate 1). 



A single representative of this very fine species was discovered 

 and kindly communicated by Captain E. W. Shufeldt, Med. 

 Dept. U. S. A., in honor of whom it is named. 



It is readily distinguished from tuierosus and latirostris of 

 LeConte by the much less transverse prothorax, 



O, sulcipeiini§ n. sp.— Form oblong, densely clothed throughout 

 with a squamose dark brown indument, paler beneath and on the legs; 

 alternate intervals of elytra slightly paler by certain reflections. Head 

 moderate; beak very much longer than the head, and, at apex, nearly as 

 wide, fully one-half longer than wide, abruptly strongly dilated at 

 ^pex, strongly trisulcate; sulci abruptly ending at the very deep and 

 strongly marked transverse basal impression; middle sulcus very broad 

 and deep, shallower anteriorly, becoming gradually narrower and deeper 

 toward base, obsolete in apical two-fifths; lateral only present in basal 

 half, narrow, deep, becoming slightly broader from apex to base; front 

 convex, flattened above in the middle; antennae with dense piceous 

 indument; first joint of funicle slightly longer than the next two 

 together. Prothorax nearly twice as wide as long, widest at posterior 

 third where the sides are very strongly rounded and prominent, thence 

 strongly convergent and almost straight nearly to the apex, then 

 abruptly constricted, strongly constricted near the base behind the 

 lateral prominences; sides very minutely and unevenly notched at 

 middle; base transverse, truncate, one-third wider than the apex; the 

 latter broadly arcuate; disk broadly convex, slightly uneven, being 

 broadly impressed anteriorly and laterally, coarsely and indefinitely 

 ruguloso-punctate; median groove moderate, not well defined. Elytra 

 •oblong, rather acutely rounded behind from above, declivous posteriorly, 

 but not perpendicular, slightly wider at apical third; sides nearly 

 straight; humeri very broadly rounded; base transversely truncate; 

 scutellum slightly prominent, triangular, wider than long, black, finely 

 rugulose, dull; disk flattened above, strongly convex at the sides, less 

 than one-half longer than wide, very slightly wider than the prothorax, 

 deeply sulcate; sulci with very large, rather close, feebly defined im- 

 pressed punctures; intervals but slightly wider than the sulci, very 

 strongly convex, with small, slender, scattered setae. Length 13.0 mm. 



