Goleopterological Notices, V. 305 



three-fonrths as wide as the protliorax, distinctly transverse ; antennae much 

 longer than the head and protliorax combined, the eleventh joint not paler. 

 Prothorax transversely subelliptical, one half wider than long; sides sub- 

 parallel, a little more convergent anteriorly, strongl/ arcuate from above; 

 base slightly wider than the apex, strongly, evenly arcuate throughout, not 

 at all sinuate near the basal angles, which are very obtuse and distinctly 

 rounded ; apical angles strongly deflexed, even somewhat inflexed, broadly 

 rounded ; disk strongly convex, with the median line very feebly impressed 

 and a large rounded and rather strongly impressed dent in the middle just 

 before the base. Elytra large, but slightly wider than long, one-fifth wider 

 and nearly one-half longer than the prothorax, at base fully as wide as the 

 pronotal disk ; humeri very slightly visible, rounded ; sides subparallel, 

 slightly arcuate; apex subtruncate, the lateral sinuations distinct ; disk sub- 

 convex, broadly, strongly impressed along the suture, especially toward base. 

 Abdomen quite distinctly shorter than the anterior parts, not more than three- 

 fourths longer than the elytra when moderately contracted, at base slightly 

 narrower than the elytra; sides convergent and just visibly arcuate to the 

 apex, the apex of the fifth segment barely two-thirds as wide as the first ; 

 border strong. Length 3.0 mm. ; width 0.95 mm. 



California (Lake Tahoe). 



The large elytra, transversely elliptical and polished pronotum, 

 with the pronounced rounded subbasal indentation and long antennae 

 will readily distinguish this species. 



OCYUSA Kraatz. 



The following species agrees satisfactorily in form and structural 

 characters with 0. ])rocidua, but has a totally different system of 

 sculpture; there appears, however, to be considerable disparity 

 among the European species, which have been separated into sub- 

 genera by Rey. 



O. aspertlla n. sp. — Subparallel, rather stout, compact and convex, 

 black, the legs and basal parts of the antennae dark rufo-testaceous, polished, 

 the punctures of the head and pronotum fine, not very dense and strongly 

 granuliform, of the elytra sparse, strongly asperate, of the abdomen coarser, 

 nearly normal, not dense but coarser and very dense on the fourth and fifth 

 segments toward base ; pubescence fine, sparse but rather long. Head trans- 

 versely orbicular, distinctly shorter and narrower than the prothorax ; sides 

 parallel and rounded ; eyes at rather more than their own length from the 

 base ; antennae nearly as long as the prothorax and elytra, thick toward apex, 

 second joint fully one-half longer than the third, the latter obconical, twice 

 as long as wide, fourth obconical, slightly longer than wide, four to ten sub- 

 equal in length but evenly, perfectly gradually and conspicuously increasing 

 in width, the tenth strongly transverse, eleventh ogival, obtuse. Frothorax 



