AMARIN^E 237 



except that the margins are more finely reflexed and the surface 

 near the foveae with finer and more numerous diffused punctures, 

 the foveae much feebler, more linear, the inner long, the outer very 

 short, the carinae extremely short and rather feeble; elytra a third 

 longer than wide and barely visibly wider than the prothorax, al- 

 most as in exaratus throughout, except that the striae are relatively 

 rather coarser, more deeply impressed and somewhat more coarsely 

 punctate. Length (cf) 8.0 mm.; width 3.4 mm. Pennsylvania. 



stygialis n. sp. 



The species described by Say under the name A mara furtiva was 

 considered distinct from exaratus by LeConte, but I am inclined 

 to agree with Hayward that is it merely founded upon pale examples 

 of that species; it is impossible, at least, to gain any further infor- 

 mation from the original description. It is possible of course that 

 furtivus may prove to be valid, as there are apparently a number 

 of distinct species in this group of the genus, as indicated above. 

 The convex apical marginal beading of the epistoma is more de- 

 veloped in this group than in the others. 



Group II 



But one species assignable to this group, very widely diffused 

 and mundane, has occurred thus far in our fauna. The male has 

 a small unimpressed oval prosternal area, which is very coarsely 

 and irregularly punctate; the anterior tarsi are only feebly dilated 

 and the terminal laminae beneath are thick and not membranous; 

 the inner side of the hind tibiae is flat and abundantly clothed with 

 suberect stiff hairs: 



Form elongate, convex, polished, black, the under surface piceous, with 

 rufous abdomen and legs; elytra but feebly alutaceous in the female, 

 though micro-reticulate; head two-thirds as wide as the prothorax, 

 with prominent eyes and very short fine oblique strioles; antennae 

 ferruginous, extending slightly behind the thoracic base; prothorax 

 widest at the middle, less than one-half wider than long, the apex 

 feebly sinuate, with distinct and but slightly blunt angles, not quite 

 as wide as the base, which is transverse, feebly arcuate medially; 

 sides finely but strongly, evenly reflexed, moderately arcuate, be- 

 coming gradually rather feebly sinuate basally, the angles right, 

 with minutely prominent tip; surface impunctate except basally, 

 the foveae large, shallow, coalescent and coarsely punctate, the carinae 

 strong, moderately long; elytra one-half longer than wide, evidently 

 wider than the prothorax, with feebly arcuate sides; striae rather 

 coarse, impressed, strongly punctate to behind the middle, the scu- 

 tellar moderately long, the lateral series but moderately interrupted; 



