American Caraboidea 145 



cupreo-aeneous; under surface and legs as in the preceding species; 

 head almost similar; antennae piceous-black, shining, longer, evi- 

 dently more than half as long as the body, the third joint longer 

 than the fourth as usual; sides of the prothorax finely reflexed or 

 beaded, moderately oblique and feebly sinuate in less than basal 

 half, faintly diaphanous throughout; surface very smooth, the 

 anterior transverse impression traceable; foveas smaller, narrower, 

 deeper and smoother than in the two preceding, the outer oblique 

 bounding carina strong and relatively somewhat longer; apex 

 evenly sinuate, narrower than the base, almost as wide as the base 

 in the male; scutellum less transverse, triangular, only a little 

 wider than long; elytra two-fifths longer than wide and evidently 

 wider than the prothorax, with the parallel sides broadly rounding 

 basally, more rapidly ogival in about posterior third; apical im- 

 pressions almost obsolete, the carina faint; punctures of the un- 

 impressed series visible toward the suture moderate; anterior male 

 tarsi only very feebly dilated basally. Length 4.25-4.65 mm.; 

 width 1. 7-1. 8 mm. Oregon. Two examples oregonus n. sp. 



Prothorax shorter, three-fourths wider than long, the punctured sub- 

 basal groove sharper and deeper, not medially interrupted. Body 

 more oblong-parallel and less convex, polished, the upper surface 

 greenish anteriorly, more cupreous on the elytra, the under surface 

 and legs concolorous and piceo-rufous; head narrower, the eyes 

 similarly only feebly convex but rather smaller in size; antennae 

 shining, black, more than half as long as the body, the third and 

 fourth joints more unequal than in oregonus; prothorax in general 

 features as in oregonus but with the apical angles blunter, the basal 

 foveae not so deep and more punctate and the carina less oblique; 

 elytra more elongate, one-half longer than wide, otherwise nearly as 

 in oregonus, the apical impression obsolete, the cariniform elevation 

 feeble; scutellum shorter but not wider. Length 4.6 mm.; width 

 1.85 mm. British Columbia (Aldermere), — Keen. [T. holmbergi 

 Mann., Kenai, Alaska] inermis Mots. 



Prothorax still shorter, four-fifths wider than long, the subbasal impressed 

 line rather deep and punctured but somewhat widely interrupted at 

 the middle. Body smaller and narrower than in inermis, highly 

 polished, black, with feeble greenish lustre above; under surface 

 black, the legs dark rufous; head smooth and convex, only slightly 

 shorter than wide, the eyes not larger but more prominent than in 

 inermis; antennae similar; prothorax very smooth, the medially 

 arcuate and finely reflexed side margins feebly diaphanous; median 

 stria extremely fine and feeble as usual; foveae rather small, deep, 

 punctured, the carina rather oblique, well developed; apex but 

 little narrower than the base in either sex; scutellum short and 

 transverse, moderate in size; elytra less than one-half longer than 

 wide, distinctly wider than the prothorax, the parallel sides but 

 feebly arcuate, rounding basally, rather rapidly ogival in apical 

 third; apical impression and attendant prominent line feebly 

 developed; punctures of the unimpressed series toward the suture 

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



