42 MEMOIRS ON THE COLEOPTERA. 



Atheta nympha n. sp. Rather slender, moderately convex, shining and 

 somewhat feebly micro-reticulate throughout, the punctures very fine, 

 rather close and asperulate; coloration throughout as in the preceding; 

 head moderate, the eyes not quite their own length from the base, the carinae 

 all but obsolete and not entire; antennae nearly as in citato, but with the outer 

 joints more transverse, the last larger, pointed and decidedly longer than the 

 two preceding, the second and third moderately elongate, subsimilar; pro- 

 thorax shorter, strongly transverse, not quite as wide as the elytra and very 

 much wider than the head, shining, parallel and rounded at the sides, not 

 impressed; elytra less transverse, very much longer than the prothorax; 

 abdomen nearly similar, the sixth tergite (d") broadly, feebly arcuato-trun- 

 cate and evenly, rather coarsely and strongly crenulate throughout; meso- 

 sternal process extending two-thirds the length of the coxae, rather wide, 

 gradually and sinuously narrowed to the rounded apex, which is separated 

 by a considerable distance from the strongly angulate metasternum, the 

 intervening ridge not much sunken and broadly convex; hind tarsi slender, 

 the first four joints nearly equal, the first scarce!}' visibly shorter. Length 

 2.3 mm.; width 0.48 mm. New York (Catskill Mts.). 



Related to citato, but abundantly distinct in its larger terminal 

 joint of the antennae, shorter, shining and unimpressed pronotum 

 and other characters. 



Atheta discreta n. sp. As in nympha in coloration, lustre and sculpture 

 but a little stouter; head nearly similar but more transverse, the carinae 

 fine but strong and completely entire; antennae shorter, stouter, gradually 

 more strongly incrassate, the subapical joints very short and strongly trans- 

 verse, the last large, gradually pointed, not quite as long as the three preced- 

 ing combined, the second and third, respectively, rather long and cylindric, 

 and materially shorter and strongly obconic; prothorax well developed, 

 convex, transverse, almost as wide as the elytra and very much wider than 

 the head, parallel and strongly rounded at the sides, with a very obsolete 

 transverse impression before the scutellum; elytra rather large, moderately 

 transverse, much longer than the prothorax, the sides slightly diverging 

 from the base; abdomen very- much narrower than the elytra, otherwise nearly 

 as in the preceding, the sixth tergite (cf ) rather narrow, broadly arcuate and 

 strongly, coarsely crenulate at apex, the sixth ventral plate rather narrow 

 and strongly, evenly rounded; mesosternal process not distinctly exposed 

 in the single type, but separated from the acute apex of the long and angular 

 metasternum by a considerable space, the intervening ridge more narrowly 

 convex than in nympha and the metasternal projection a little longer, narrower 

 and more acute; tarsi nearly similar. Length 2.0 mm.; width 0.5 mm. 

 New York (Catskill Mts.). 



Resembles nympha but differs in its stouter form, shorter antenna, 

 with more transverse outer joints and relatively still longer eleventh 

 and different second and third joints; also in its strong and entire 

 infra-lateral carinse, laiger prothorax and elytra and narrower ab- 

 domen. 



