AMARIN.E 239 



The species glacialis Mann., was described originally from a single 

 specimen taken under a stone on the Kenai Peninsula of Alaska, 

 and, as represented by LeConte's Kenai examples, described by 

 Hayward, it differs from nainensis in its paler basal antennal joint, 

 in its obsolete and not distinct transverse pronotal impressions, in 

 the subacute and slightly prominent basal thoracic angles, in its 

 long scutellar stria and in having the two basal joints of the hind 

 tarsi grooved externally; its length is given as 6.25-8 mm. The 

 species described by Putzeys as glacialis, from a specimen in the 

 Chaudoir collection, is evidently a different thing; it was considered 

 a Curtonotus by that author. 



Group IV 



The species of this group are numerous and are rather homoge- 

 neous. As shown in latior, the male prosternum has an elongate 

 flattened area of moderate punctures, the anterior tarsi moderately 

 dilated, each joint with a relatively very small narrow apical lam- 

 ina, the coarse hairs within the hind tibiae rather few in number 

 and inconspicuous and the slender hind tarsi without external 

 grooves. As usual, there are two apical setigerous abdominal punc- 

 tures in the male and four in the female. Our species are the fol- 

 lowing so far as known : 



Scutellar stria without an ocellate puncture 2 



Scutellar stria with a small but distinct ocellate puncture; body small. .7 

 2 Body narrow and elongate'. Shining and black above and beneath, 

 the legs obscure rufous, the anterior tarsi (cf) pale ferruginous; 

 surface convex; elytra (9 ) but slightly less shining; head two-thirds 

 as wide as the prothorax, with very prominent eyes and fine strioles; 

 antennae obscure ferruginous, slender, as long as the head and pro- 

 thorax, the latter widest at the middle, two-fifths (cf ) to one-half 

 (9 ) wider than long, the apex deeply sinuate, with prominent blunt 

 angles, much narrower than the base, which is transverse; sides 

 rather finely but strongly reflexed, evenly arcuate from apex to 

 base, the hind angles nearly right, sometimes feebly prominent; sur- 

 face smooth and punctureless, excepting the foveae, which are shal- 

 low, linear, well separated and moderately punctate, the carinae very 

 obtuse, the transverse impressions almost obsolete; elytra one-half 

 longer than wide, scarcely visibly wider than the prothorax, obtusely 

 ogival in apical third; striae moderate, slightly impressed and finely 

 not closely punctate, the scutellar moderate, the lateral series more 

 widely spaced but not interrupted medially; intervals nearly flat 

 even apically; metasternum with some coarse punctures laterally, 

 the episterna subimpunctate. Length (c? 9 ) 7.0-7.2 mm.; width 



