North American Species of Trogophlceus. 357 



transverse, rather coarsely, but very densely punctate prothorax, 

 with the posterior angles not at all evident. 



There is no natural division basable on the strength of the 

 pronotal impressions, the character as employed in the table 

 being purely artificial. The species, therefore, although placed 

 near congener in the table, is not allied very closely to it 

 except in the strongly marked impressions; in all its other 

 characters, especially including general facies and size, it 

 is a member of the following group of four species ending witli 

 modestus, and is more particularly similar in outline to nanulus, 



33 T, temporalis n. sp.— Rather slender and convex, black; legs 

 -and antennae piceous, knees and tarsi ,very slightly paler; pubescence 

 very fine, short, rather sparse; integuments feebly shining. Head 

 about as wide as and slightly longer than the prothorax, broadly con- 

 vex, finely and very densely punctate, subalutaceous; prominences 

 small, very short and rather feeble; antennae very moderately robust, 

 about as long as the head and prothorax, rather feebly clavate; joints 

 two to four decreasing uniformly and very rapidly in length, the former 

 distinctly more robust, distinctly longer than wide, the latter slightly 

 wider than long, tenth a little transverse; eyes small, slightly convex 

 and prominent; tempora nearly as long, broadly rounded and slightly 

 more prominent, Prothorax widest at the middle; sides very broadly, 

 obtusely subangulate, very feebly convergent anteriorly, more strongly 

 so posteriorly; base and apex both broadly, feebly arcuate; base nearly 

 three-fourths as wide as the disk, much narrower than the apex; api- 

 cal angles obtuse, but scarcely perceptibly rounded; basal more broadly 

 so; disk one-half wider than long, broadly, almost evenly convex; me- 

 dian impressions almost obsolete and barely visible; punctures mode- 

 rate, slightly irregular, 'generally separated by more than their own 

 widths, but denser toward the sides and toward base in the median im- 

 pressions. Elytra distinctly shorter than wide, shghtly wider and 

 longer than the prothorax, very feebly impressed, rather coarsely, 

 deeply, and unevenly punctate, the punctures separated by from once 

 to twice their own diameters. Abdomen as wide as the elytra, parallel; 

 sides nearly straight; border moderate; surface shining, feebly reticu- 

 late, minutely and sparsely punctate. Legs moderate. Length 1.8 mm. 



New York 2, Mr. J. B. Smith; Massachusetts 2, Mr. F. 

 Blan chard. 



The short elytra, small eyes, and large tempora will easily dis- 

 tinguish this small but very distinct form. 



