AMARIN^E 233 



twice as long as wide; prothorax feebly transverse, a fourth to third 

 wider than long, with very evenly rounded, finely but strongly reflexed 

 sides, widest barely before the middle; apex equal in width to the 

 base as in the others of this section, feebly sinuate, with obtusely 

 rounded angles; fovese large, rather deep, coarsely punctate and com- 

 pletely coalescent as a rule, the carinse short but distinct, moderately 

 elevated; elytra elongate, fully three-fourths longer than wide, never 

 more than barely visibly wider than the prothorax, very gradually 

 ogivally rounded behind, the sides parallel and arcuate; striae rather 

 fine but impressed and conspicuous, finely punctate; intervals feebly 

 convex. Length (cf 9 ) 8.5-9.2 mm.; width 3.2-3.4 mm. New 



Hampshire (Mt. Washington). Five examples argutus n. sp. 



Body somewhat as in argutus but shorter and less convex, rather shining, 

 similar in coloration; head similar and with very prominent eyes, 

 the strioles short, rather more punctiform; antennae almost similar; 

 prothorax much shorter and more transverse, though not quite one- 

 half wider than long, otherwise nearly as in deficiens, except that 

 the sides become oblique and subsinuate toward base, and the foveae 

 are more completely divided and with fewer punctures; elytra shorter 

 and not quite so convex, three-fifths longer than wide, evidently 

 wider than the prothorax; striae and punctures nearly similar. 

 Length (9) 8.4 mm.; width 3.0 mm. New Hampshire (summit of 

 Mt. Washington). One specimen inanis n. sp. 



Most of these forms seem to have been under observation by 

 Mr. Hayward, but were not definitely characterized; it is rather 

 singular that three of them should be found within the narrow con- 

 fines of the White Mts., of New Hampshire, but I am unable, under 

 present evidence, to consider them specifically identical, or in some 

 cases as even closely related. One of them may have possibly been 

 identified by LeConte as hyperborea Dej., but in such case not cor- 

 rectly. 



Stereocerus Kirby 



My four examples of the remarkably isolated hcematopus Dej., 

 forming the type of this genus, are all females, and I have drawn 

 the male characters stated in the above table of genera from the 

 work of Mr. Hayward. There is a distinct habital difference be- 

 tween hcematopus and Curtonotus proper, so far at least as concerns 

 the American fauna, and I have but little doubt of the necessity 

 for generic separation. These habital peculiarities relate especially 

 to the more ventricose form of the body and to the shining metallic 

 lustre. The structural features enumerated above seem, in con- 

 junction with the habital differences, to be decisive. The exam- 



