Coleopterological Notices, IV. 107 



New Mexico (Las Vegas). 



The single specimen is probably a male, the abdomen having 

 near the base, an elongate-oval, feeble impression, which is finely, 

 extremely densely punctate and coarsely pubescent. This is one 

 of the largest species of the genus. 



R. discors n. sp. — Narrowly cylindrical, black and polished ; legs and 

 antennae paler, dark rufo-testaceous. Head minutely, remotely punctate 

 toward base, rather longer than the beak, which is feebly conical, densely 

 punctate, not impressed and wider than long ; eyes rather small but strongly 

 convex and prominent; antennae moderately thick, the basal joint of the 

 funicle more robust, excavated at apex and enclosing the second, with the 

 exception of a short apical margin, two to six subequal, strongly transverse, 

 compactly perfoliate, the seventh rather longer and wider, obconical ; club 

 wider than any joint of the funicle but not abrupt, oval, with its basal joint 

 composing one-half the mass, polished and sparsely setose, the remainder 

 densely pubescent. Prothorax fully as long as wide, the sides very slightly 

 convergent and nearly straight from just before the base to the apex, the 

 constriction fine and very feeble ; apex broadly arcuate and about as wide as 

 the base ; disk coarsely, deeply, moderately closely punctate, with a wide 

 impunctate spot in basal two-thirds. Elytra not distinctly wider than the 

 prothorax and not quite twice as long, scarcely twice as long as wide, the 

 sides straight ; apex evenly obtusely and semi-circularly rounded ; disk very 

 coarsely, deeply sulcate, the grooves strongly punctate ; intervals not quite 

 as wide as the sulci, each with a single series of small, very remote punc- 

 tures. Under surface rather coarsely deeply and densely punctate, the 

 abdomen scarcely more sparsely so; first suture straight, very fine, not 

 impressed. Anterior coxa? not large, separated by one-fifth of their own 

 width. Length 2.8-3.0 mm. ; width 0.8 mm. 



Florida. 



Allied in antennal structure to nimius, but differing greatly in 

 its small size and more slender form; the antennal club is rela- 

 tively thicker than in nimius and the funicle gradually thicker 

 toward apex. If the antennal funicle of these two species were not 

 examined with great care, it would surely be pronounced 6-jointed, 

 so thoroughly is the second joint hidden within the apex of the 

 first. 



