ClCINDELID.E AND CARABID.E 67 



than usual, shining, black, the pronotum with feeble greenish glint 

 laterally, the elytra bright aeneous-green throughout, excepting the serial 

 elevations, which are black; propleura faintly cupreous, with the small 

 scattered asperate punctures bright green, these also greenish on the 

 other sternal pleura; head small, with fine scattered punctures; antennae 

 extending to about basal fourth of the elytra; prothorax not quite twice 

 as wide as long, almost twice as wide as the head and fully two-thirds 

 as wide as the elytra, strongly rounded at the sides anteriorly, the sides 

 thence strongly oblique and less rounded to the apices of the basal angles, 

 which are narrowly rounded and much produced posteriorly; surface 

 concave at the sides but only feebly impressed laterally at base, the median 

 stria strong; punctures fine and sparse, densely rugulose laterally, more 

 broadly at base; elytra oval, widest at the middle, not quite one-half 

 longer than wide, the surface between the series of large oblong elevations 

 evenly and asperately but not densely punctate and feebly elevated 

 along the middle, the cancelli of the marginal series small and not 

 black; foveae separating the elevations large, shallow; legs slender; 

 anterior tarsi (c?) narrowly dilated, the second joint rather longer than 

 wide. Length (cf ) 15.0 mm.; width 6.8 mm. Idaho (Priest Lake). 



This species was sent to me under the name moniliatus, of which 

 the Carabus bicolor of Walker is a synonym, but it evidently differs 

 in the brighter metallic green coloration of the elytra, smaller size 

 and much sparser sculpture of the head, prothorax and elytra; 

 moniliatus is 16.5 mm. in length and is said to have a good deal 

 the habitus of Carabus serratus, which would make its convexity 

 very much less. It seems to resemble laqueatus Lee., from Sas- 

 katchewan, which is by no means a synonyn of moniliatus, but 

 apparently a distinct species, much more closely than it does the 

 latter, but this is described as robust and nigro-aeneous ; its length 

 is nearly 17 mm. 



Callisthenes discors ssp. inversus nov. Coloration, shining lustre 

 and general characters exactly as in discors, but less obese and more 

 oblong; head not quite so large but similar; prothorax similar throughout 

 though a little shorter and more transverse, and, in relation to the elytra, 

 very much wider; elytra oblong, with parallel and moderately rounded 

 sides, having unimpressed series of strong deep subelongate punctures, 

 the intervals flat, each with a series of small and well separated punctures. 

 Length (9) 17-5 mm.; width 8.6 mm. California (San Francisco). 



The type is the only one discoverable among a good series of dis- 

 cors also taken at San Francisco; in outline it is quite different, 

 the prothorax not barely two-thirds as wide as the elytra as in that 

 species, but fully three-fourths as wide, and the oblong elytra, 

 with much less rounded and less inflated sides, display a singular 



