342 Trans. Acad. Sci. of St. Louis. 



posed; abdomen parallel, bul little narrower than the elytra. Length 

 3.5 mm. ; width 0.9 mm. Idaho (Coenr d'Alene) pallida n. sp. 



No indication o^sex is observable in any of the specimeng 

 at hand. 



Valenusa n. gen. 



A species of very distinct facies forms the type of this 

 genus, allied to Atheta but differing in its elongate slender 

 form, pyriform head with small and anterior eyes, much 

 shorter mesosternal process, which is very acute, and in the 

 extremely extended longitudinal discontinuity in the form of 

 a narrow, acutely rounded ridge, the metasternum being 

 broadly arcuate and not entering the intercoxal space; the 

 coxae are closely contiguous. The infra-lateral ridges of the 

 head extend forward more than half way to the buccal open- 

 ing and the hind tarsi are short, with the basal joint very much 

 shorter than the second. The type may described as follows : — 



Form very slender, parallel, moderately convex, alataceous, distinctly micro- 

 reticulate, the abdomen polished and minutely strigilate in transverse 

 wavy lines; pubescence short, decumbent, inconspicuous, the punctures 

 very fine, rather close-set but indistinct, sparse on the abdomen posteri- 

 orly; color pale testaceous, the head but little darker, the abdomen feebly 

 infuscate except at the apices of the segments; legs pale, the antennae 

 infnscate, the first joint pale, rather stout, distinctly incrassate distally, 

 extending to about basal third of the elytra, the second joint distinctly 

 longer than the third, fourth slightly longer than wide, fifth to tenth 

 progressing from as long as wide to distinctly transverse, the eleventh 

 obtusely pointed, about as long as the two preceding combined; head 

 Inflated toward base with rounded sides, slightly elongate, abruptly 

 but feebly constricted at base, the neck wide; eyes small, only slightly 

 convex; protborax but slightly though evidently wider than the head, a 

 fifth or sixth wider than long, subparallel, widest before the middle, 

 the sides feebly arcuate, becoming straighter and j ust visibly converg- 

 ent posteriorly to the obtusely rounded basal angles, the surface v«ry 

 finely and feebly impressed along the median line almost from apex to 

 base, becoming gradually slightly less feebly so basally ; elytra but very 

 slightly wider and only just visibly longer than the prothorax, the sidea 

 feebly diverging from the humeri, which are very slightly exposed at 

 base; abdomen nearly as wide as the elytra, parallel, elongate, the first 

 three tergltes strongly and equally impressed at base. Length 3.4 mm. ; 

 width 0.66 mm. California (Pomona, Lo8 Angeles Co.),— H. C. Fall. 



parallela n. sp. 



There are no external indications of sex in the single type 

 specimen in my cabinet. 



