238 MEMOIRS ON THE COLEOPTERA 



subapical sinus small and feeble; intervals feebly convex. Length 

 (cf 9 ) 6.7-7.7 mm.; width 2.7-2.9 mm. Rhode Island to Lake 

 Champlain and Lake Superior (Marquette and Duluth), also in 

 Europe and Siberia. Abundant apricarius Payk. 



The metasternal punctures vary greatly in number, rarely be- 

 coming very close laterally. 



Group III 



There is also but a single species in this group known to me; 

 glacialis Mann., may however also be associated with it, although 

 Mr. Hayward states, presumably after observation of one of the 

 Kenai, Alaska, examples in the LeConte collection, that the male 

 prosternum in glacialis has no punctured area. There are also 

 many other specific differences, judging by the Hayward descrip- 

 tion. In nainensis the male has the diffused medial punctures of 

 the prosternum small, the anterior tarsi very moderately dilated, 

 each joint with two or three small erect lamellae beneath, and the 

 inner side of the hind tibiae has a very elongate area of not very 

 dense, long, stiff suberect hairs; the outer side of the first hind tarsal 

 joint is very faintly grooved, the second simple; it may be described 

 as follows: 



Body rather stout, oblong-suboval, moderately convex, somewhat ven- 

 tricose, shining and aeneous in both sexes, the elytra faintly micro- 

 reticulate (cf) or strongly so (9); under surface black, the legs 

 black, the femora rufescent; head large, fully two-thirds as wide as 

 the prothorax; eyes prominent, the strioles coarsely foveiform (cf ) 

 or fine and linear ( 9 ) ; antennae slender, longer than the head and 

 prothorax, deep black throughout; prothorax two-thirds wider than 

 long, the apex feebly sinuate and with bluntly rounded angles and 

 slightly narrower than the base, which is subarcuate medially; disk 

 widest slightly before the middle, the sides finely but strongly re- 

 flexed, arcuate, becoming oblique and faintly subsinuate posteriorly, 

 the angles much more than right, not rounded; surface smooth, 

 with scattered moderate punctures near the sides and sometimes 

 latero-apically, also finely medio-basally; foveae rather large, sub- 

 confluent and coarsely punctate (cf ), or smaller, more isolated and 

 with but few finer punctures (9); carinae wholly wanting; elytra 

 fully one-half longer than wide, a third to fourth wider than the 

 prothorax, parallel, with arcuate sides, gradually ogival in apical 

 two-fifths; striae moderate, evidently though not coarsely punctate, 

 the scutellar very moderate, the lateral series widely interrupted; 

 intervals flat, barely convex on the declivity, the sinus moderate, 

 shallow; punctures of the under surface variable. Length (cf 9 ) 

 6.25-6.65 mm.; width 2.75-2.8 mm. Labrador (Nain), Sherman. 



nainensis n. sp. 



