2i8 Memoirs on the Coleoptera 



Elytral striae finer, less abruptly defined and feebly impressed, the 

 intervals not exactly flat and not evidently uneven or punctulate. . 13 



13 — Form elongate, moderately convex, shining, the elytra not quite so 

 polished as the anterior parts, piceous in color throughout, the 

 thoracic margins narrowly pallid; head three-fifths as wide as the 

 prothorax, with large and rather prominent eyes; antennae slender, 

 flavate, half as long as the body; last two palpal joints equal in 

 length; prothorax quadrate, very slightly shorter than wide, the 

 sides broadly arcuate, more converging anteriorly; apex moderately 

 narrowed, deeply sinuate; basal angles narrowly rounded; surface 

 with vestigial impressions and long and very feeble foveae, the 

 sides rapidly declivous, with narrow reflexed edge, scarcely differing 

 at all basally; elytra three-fifths longer than wide, two-fifths wider 

 than the prothorax, the sides rapidly ogivally rounded at apex; 

 striae very fine, not impressed; subscutellar puncture coarse; dorsal 

 punctures three or four; three basal joints of the anterior male tarsi 

 rather strongly dilated. Length (scT, 79) 7.0-8.0 mm.; width 

 2.8 mm. Alaska (St. Paul Island) beringi n. sp. 



Form still narrower, very elongate, more convex and smaller in size, 

 strongly shining throughout above, scarcely less so in the female, 

 blackish-piceous above throughout, the sides of the prothorax only 

 very narrowly pallid; legs pale flavate as usual; head smaller and 

 narrower than in the preceding, slightly more than half as wide as 

 the prothorax, the eyes well developed, not very convex; last palpal 

 joint a little longer than the third; prothorax unusually and evenly 

 convex and very smooth from side to side, fully as long as wide to 

 but little less; impressions all very feeble; sides narrowly reflexed, 

 more widely at the narrowly rounded basal angles; elytra long, 

 three-fifths to one-half longer than wide, a third wider than the 

 prothorax, evenly rounding in about apical third; striae rather fine, 

 deeply impressed (cf), very moderately (9); intervals somewhat 

 strongly to feebly convex; subscutellar puncture strong; dorsal 

 punctures two in number; anterior tarsi (cf ) rather strongly dilated. 

 Length (cf 9) 6.0-7.0 mm.; width 2.2-2.5 mm. Alaska (St. Paul 

 Island). Fourteen examples nanulus n. sp. 



Longulus approaches obscurus Lee, more closely than any other 

 species and possibly may be identical, but it is stated of obscurus 

 that the sides of the prothorax are distinctly depressed though 

 hardly reflexed; in longulus the sides are strongly reflexed, more 

 feebly at base, where the surface as usual becomes broadly deplan- 

 ate; it is also said of obscurus that it is "minus elongatus." The 

 very elongate form of longulus is its most striking feature; it is 

 very much narrower and more elongate than ruficollis and more so 

 even than in the narrower quadricollis, both of which had been 

 described just before obscurus in the text (Pr. Acad. Phila., 1854, 

 p. 37). So I hesitate to propose any synonymy at present. 



