Coleopterological Notices, IV. 703 



R. tenuis n. sp. — Narrowly cylindrical, convex, black, the legs and an- 

 tennae dark brown ; integuments polished and glabrous. Head and beak 

 finely, rather sparsely punctate, the latter feebly conical, three-fifths as long 

 as the prothorax, one-half longer than wide. Prothorax very nearly as long 

 as wide, broadly, just visibly impressed behind the apex ; sides feebly con- 

 vergent and nearly straight from before the base to the apex, the latter 

 broadly arcuate, subequal in width to the basal margin ; punctures coarse, 

 deep, rather close-set and uneven, without median line. Elytra but very 

 slightly wider than the prothorax and scarcely more than twice as long, 

 twice as long as wide, the sides parallel and straight nearly to apical fourth, 

 then convergent and nearly straight to the narrowly rounded apex ; humeri 

 angulate and somewhat anteriorly prominent ; disk with feebly impressed 

 series of coarse deep rounded and close-set punctures, the intervals flat, 

 barely as wide as the striae, each with a single series of fine but distinct, 

 rather remote punctures. Under surface rather coarsely but feebly and not 

 densely punctate. Length 2.1-2.3 mm. ; width 0.6-0-7 mm. 



Texas (Austin). 



Readily recognizable by its resemblance to an unusually slender 

 Rhyncolus. 



RHYIVCOLUS Germ. 



The species of this genus vary greatly among themselves, espe- 

 cially in the structure of the antennas and the degree of separation 

 of the anterior coxae. The following descriptions will indicate some 

 of these discordances. 



R. pall ens n. sp.— Cylindrically convex, shining, pale flavo-ferruginous 

 throughout, the head, beak and apical parts of the prothorax piceous-black. 

 Head and beak minutely, the latter rather closely, punctate, impressed along 

 the middle, conical, extremely short, much wider than long and shorter than 

 the head; eyes small, rounded, prominent; antenna? moderate, the scape 

 nearly as long as the funicle, with one or two stiff erect setae on the under 

 surface, the fnnicle slender with the second joint obconical, as long as wide 

 and longer than the third, club abrupt, oval, densely pubescent and about as 

 long as the five preceding joints combined. Prothorax a little wider than long, 

 feebly constricted behind the apex, the latter as wide as the base ; sides feebly 

 convergent from before the base to the apex and nearly straight ; disk very 

 finely closely punctate, without entire median line. Elytra but slightly wider 

 than the prothorax and more than twice as long, twice as long as wide ; sides 

 straight ; apex obtusely rounded ; disk with almost entirely unimpressed series 

 of fine, rounded, approximate punctures, the series impressed on the apical 

 declivity and the fifth also toward base ; intervals flat, minutely punctate in 

 single uneven series, about twice as wide as the serial punctures. Under sur- 

 face very finely, densely punctate, the abdomen evenly but less densely so, 

 the first suture deep throughout, broadly angulate in the middle. Anterior 



