American Caraboidea 273 



broadly rounded anteriad, oblique posteriad, the hind angles some- 

 what blunt, thickened; surface smooth, except at apex and base, 

 the impressions very feeble, the stria fine, impressed, biabbreviated; 

 elytra short, parallel, a fourth longer than wide, two-fifths wider 

 than the prothorax; apices slightly oblique, with very broad ex- 

 ternal angle; striae in about inner half shallowly broad and sulci- 

 form; dorsal punctures adjacent to the third stria, just before the 

 middle and at apical fourth. Length 3.0 mm.; width 1.2 mm. 

 California (San Diego). A single female example, taken by Mr. 



Dunn laticollis Lee. 



Upper surface rather shining but barely at all metallic, the elytra not 

 quite so deep black as the anterior parts; under surface and legs 

 black, the coxae paler as usual; head only just visibly narrower than 

 the prothorax, fully as long as wide, with rather large and prominent 

 eyes, the surface smooth, feebly punctulate and subrugulose an- 

 teriorly, the impressions short; antennee slender, nearly half as 

 long as the body; prothorax almost three-fifths wider than long, 

 relatively not so large as in the preceding, though nearly similar in 

 outline, the hind angles somewhat more than right but sharper and 

 prominent; impressions obsolete, the surface punctulate near apex 

 and base; stria fine, deeply impressed; apex very shallowly sinuate, 

 subprominent toward the middle; elytra between a third and fourth 

 longer than wide, parallel, with broadly arcuate sides, fully one- 

 half wider than the prothorax; striae fine throughout, feebly im- 

 pressed and much less than usually subsulciform internally; dorsal 

 punctures fine, not quite adjoining the third stria behind basal 

 third and at apical fourth. Length 2.85 mm.; width i.i mm. 

 Nevada (Reno). A single example, taken by the writer. 



nevadensis n. sp. 



6— Sides of the prothorax moderately oblique behind 7 



Sides strongly oblique, the base relatively narrow lO 



7 — Eyes notably prominent; surface shining, black, very obscure sub- 

 aeneous in lustre; under surface and legs black; head rather large, 

 barely visibly narrower than the prothorax, smooth, with some 

 sparse and minute punctulation anteriorly, the anterior impressions 

 short but deep; antennae slender, half as long as the body; prothorax 

 less than usually expanded anteriorly, slightly less than one-half 

 wider than long, widest behind apical third, the sides broadly 

 rounded, oblique and becoming gradually sinuate behind, the angles 

 right and sharp; margins very finely reflexed, the surface shining 

 and nearly smooth, punctulate at apex and base, the impressions 

 almost obsolete, the median stria deeply impressed; elj^tra oblong, 

 parallel, with broadly and subevenly arcuate sides, scarcely a third 

 longer than wide, three-fifths wider than the prothorax; striae 

 broadly sulciform, finer and feebler laterally, the micro-reticulation 

 strong; dorsal punctures distinct, barely before the middle and 

 just visibly before apical fourth. Length 3.1 mm.; width 1.2 mm. 



Arizona (Tugson), — J. F. Tucker tuckeri n. sp. 



T. L. Casey, Mem. Col. IX, Feb. 1920. 



