American Caraboidea 275 



minutely prominent and sharply right; surface shining and with 

 some fine loose subtransverse rugulae, the impressions evident; 

 median stria deeply and broadly impressed; elytra a third to almost 

 one-half longer than wide, not quite one-half wider than the pro- 

 thorax, the broadly sulciform striae much more shallow than in the 

 two preceding species; dorsal punctures slightly before the middle 

 and behind apical third. Length 2.8-3.2 mm.; width i. 0-1.2 mm. 

 New Mexico (Jemez Springs), — Woodgate. Three specimens. 



thoracicus n. sp. 



10 — Color black, feebly aeneous, the elytra piceo-aeneous; under surface 

 and legs black; surface shining; head fully as long as wide, five- 

 sixths as wide as the prothorax, the eyes rather well developed, 

 only moderately prominent; surface nearly smooth, with minute 

 sparse punctulation; antennae more than half as long as the body: 

 prothorax one-half wider than long, with the sides subprominently 

 rounded near apical two-fifths, strongly oblique, becoming slightly 

 sinuate thence to the basal angles, which are sharp and minutely 

 subprominent; surface with some fine sparse transverse rugulae, 

 finely, closely sculptured and opaculate basally and longitudinally 

 finely rugulose at apex, the anterior impression obsolete; median 

 stria fine, impressed, not entire; elytra a third longer than wide, 

 parallel, with broadly arcuate sides, two-thirds wider than the 

 prothorax, the sulciform striae deep. Length 3.2 mm.; width 1.18 

 mm. Maryland (Piney Point), Mississippi (Vicksburg) and one 

 example, differing only in having slightly shorter elytra, from Lake 

 Superior (Bayfield) cordicollis Lee. 



Color black, obscurely aeneous above, the femora basally and the tro- 

 chanters picescent; head fully as long as wide, only a little though 

 evidently narrower than the prothorax, the eyes well developed 

 but not very prominent; front as in the preceding, the anterior 

 lineiform impressions slightly longer; antennae more than half as 

 long as the body; prothorax nearly as in cordicollis but even more 

 rapidly and widely inflated apically, the base three-fourths as wide 

 as the apex, which is broadly sinuate; surface smoother and more 

 polished, duller, rugulose and feebly impressed near apex and base, 

 the stria fine but impressed; elytra rather elongate, more than a 

 third longer than wide, with parallel and broadly arcuate sides, 

 one-half wider than the prothorax; base more deeply sinuate 

 medially than in the preceding, the sulciform striae more shallow. 

 Length 3.1-3.3 mm.; width i. 0-1.2 mm. Washington State. 

 Four examples pugetanus n. sp. 



Color black, feebly aenescent above, the elytra more brightly aeneous; 

 size smaller than in the two preceding; head relatively large, barely 

 at all narrower than the prothorax, at least in the male, not quite as 

 long as wide, the eyes moderately large and distinctly prominent; 

 front nearly smooth, with some close strigilate rugulae toward the 

 sides; antennae rather more than half as long as the body; prothorax 

 short, three-fifths wider than long, widest at apical third, where the 

 sides are strongly rounded, thence very oblique posteriorly, becoming 

 almost straight and parallel near the angles, which are right and 



