26 MEMOIRS ON THE COLEOPTERA. 



This species may be known readily by its short and transverse 

 prothorax, virtually as wide as the elytra and by the antennal 

 structure, the second and third joints being shorter than in any of 

 the preceding. It is very abundant in individuals like nearly all 

 of this group. 



Atheta elota n. sp. Small, barely convex, somewhat shining, the abdomen 

 strongly so, pale piceo-rufous, the elytra albido-flavate, the abdomen clouded 

 subapically; antennse brown, testaceous basally; punctuation very fine, 

 close, scarcely at all rough; head transversely orbicular, the eyes well de- 

 veloped, at much less than their own length from the base, the carinse dis- 

 tinct, entire; antennse notably short, stout, slender basally, joints five to 

 ten strongly transverse, second and third as in gnoma; prothorax rather 

 flat, strongly transverse, parallel and rounded at the sides, much wider than 

 the head and only slightly narrower than the elytra, not impressed; elytra 

 moderately transverse, much longer than the prothorax; abdomen parallel, 

 narrower than the elytra, the fifth tergite very distinctly longer than the 

 fourth, the sixth (c?) truncate, the truncature feebly sinuate medially, the 

 edge thin and even, the adjoining surface transversely even to the lateral 

 carinse, which are straight and fine, with no appearance of an auriculiform 

 process; sterna as usual in this group, the hind tarsi with the first four joints 

 equal, the first not evidently shorter than the second. Length 2.2 mm.; 

 width 0.55 mm. New York (Catskill Mrs.). 



Distinguishable by its small size, rather flat surface, pale colora- 

 tion, short antennae with strongly transverse joints and by the male 

 sexual characters. 



Atheta insidiosa n. sp. Parallel, rather depressed above, moderately 

 shining, except the abdomen which, as usual, is strongly shining and minutely, 

 sparsely punctulate, the punctures elsewhere very fine, rather close but not 

 strongly asperate; vestiture very short, not conspicuous; coloration as in 

 the preceding species, the dark areas piceous and not black; head well de- 

 veloped, transverse, the eyes rather prominent, at much less than their 

 own length from the base, the carinse entire; antennae as in elota, the second 

 and third joints similar though a little longer, five to ten distinctly though 

 not quite so strongly transverse; prothorax similar; elytra a little more 

 transverse, more evidently wider and very much longer than the prothorax; 

 abdomen nearly similar, except that the sixth tergite (d") is broadly sinuato- 

 truncate, the short straight fine carinae limiting the apical surface laterally 

 a little stronger and gradually sensibly reflexed, and the edge has, medially, 

 two very feeble rounded subtumid lobes, mutually separated by one-half 

 more than either from the rounded side angles of the apex; sterna as usual 

 in this group, except that the mesosternal process is less acutely acicular. 

 Length 2.6 mm.; width 0.63 mm. New York (Catskill Mts.). 



Closely allied to elota but larger, stouter, with slightly less ab- 

 breviated antennae, more prominent tempora and differently de- 



