American Caraboidea 137 



valid; similis Lee, from the vicinity of Long's Peak, is also a 

 subspecies of ruscarius and not a synonym. The species described 

 by Aiannerheim as californiciis, which has been omitted from our 

 lists, but usually considered the same as riparins L.,is a perfectly 

 valid species, allied to riparius, and as I see from a European 

 specimen of the latter at hand, is of similar outline and nearly 

 similar sculpture, but in riparius the epipleura of the elytra are 

 gradually narrowed from base to about the middle, with even 

 internal outline, while in calif ornicus, of which I have a considerable 

 series from Lake Co., California to Washington State, the epipleura 

 are obtusely angulate within near basal third, thence more- rapidly 

 narrowing behind. Besides this rather radical difference, the 

 prothorax in californiciis is scarcely as wide as the head, not wider 

 than long, more strongly, loosely and irregularly punctured than in 

 riparius and with deeper impression and consequently more irregular 

 surface, the sublateral foveae being especially distinct; in riparius 

 the prothorax is wider than long and with comparatively even, 

 finely and densely punctured surface, and is about equal in width 

 to the head. 



The following species is a little larger and relatively much broader 

 than californicus: 



Elaphrus finitimus n. sp.— Moderately convex, ventricose, obscurely 

 cupreous, the under surface bright green; legs obscure, the tarsi, base 

 and apex of the tibiae and most of the femora green, the posterior femora 

 testaceous in nearly basal half, the others pale only at base; head scarcely 

 as wide as the prothorax, with the usual prominent eyes, the surface 

 densely punctulate, the sculpture centrally feebly, unevenly, longitud- 

 inally strigilate; antennae short, black, with greenish lustre basally; 

 prothorax evidently wider than long, relatively larger than in cali- 

 fornicus, constricted basally, the sides prominently rounded; base as 

 wide as the apex; surface finely, closely punctate throughout, the sub- 

 lateral median pit distinct; median furrow short, deep, broadly bifurcate 

 anteriorly; elytra closely punctulate, a third longer than wide, a little 

 less than twice as Avide as the prothorax, the obtuse humeral angle 

 rounded, the sinus between basal third and fourth short and feeble, 

 widest behind the middle, obtusely ogival behind; foveolae large, well 

 impressed, densely punctate, green, the central elevation large, feeble 

 and obscure, the foveolse in four series as usual and connected axially 

 in some cases by more shining elevations, of which one near the suture 

 and basal third is very large, smooth and polished; under surface densely 

 punctate, the abdomen smooth except laterally. Length (9) 7.0 mm.; 

 width 3.3 mm. California. 



