44 MEMOIRS ON THE COLEOPTERA. 



Atheta freta n. sp. Moderately slender and convex, feebly shining, finely 

 micro-reticulate, the head most strongly so (cf), the abdomen faintly and 

 irregularly, the punctures very fine and close, asperulate; color piceous- 

 black, the prothorax but little paler, the elytra and legs moderately pale; 

 head broadly, longitudinally and feebly impressed (cf), the eyes moderate, 

 the carinae fine and scarcely entire, the antennae piceous, gradually paler 

 basally, slender, moderate in length, feebly incrassate, the outer joints 

 evidently transverse, the last slightly longer than the two preceding, the 

 second and third equal, feebly and strongly obconic respectively; prothorax 

 moderately transverse, but little narrower than the elytra, much wider than 

 the head, parallel and evenly arcuate at the sides, scarcely impressed; elytra 

 moderately transverse, much longer than the prothorax; abdomen narrower 

 than the elytra, parallel basally, thence feebly narrowing apically, the punc- 

 tures rather close but feeble, the fifth tergite much longer than the fourth, 

 the sixth (cf) broadly, transversely truncate and very finely but distinctly 

 crenulate, the lateral crenelures scarcely larger but more pointed and denti- 

 form. Length 2.5 mm.; width 0.55 mm. North Dakota (Bismarck). 



The antennae and male sexual characters are sufficiently distinctive 

 to identify this species, which is a little smaller than either of the 

 two preceding. 



Atheta evecta n. sp. General form, coloration and sculpture as in annexa, 

 rather shining, the micro-reticulation moderately developed, the abdomen 

 with not very dense and unevenly wavy transverse strigilation; head mod- 

 erate, transversely oval, the eyes at less than their own length from the base, 

 the carinae fine but sharp, not entire; antennae moderately long, gradually 

 somewhat strongly incrassate, blackish, testaceous basally, the outer joints 

 fully one-half wider than long, the eleventh longer than the two preceding, 

 the second and third moderately elongate, subequal; prothorax transverse, 

 nearly as wide as the elytra, much wider than the head, slightly widest and 

 rounded at the sides anteriorly, not definitely impressed; elytra evenly pale, 

 short and transverse, with feebly diverging sides, the suture only slightly 

 longer than the prothorax; abdomen black, piceous at tip, the two basal 

 segments pale testaceous and parallel, thence feebly tapering to the apex, 

 the fifth tergite longer than the fourth, the sixth (cf ) rather broadly truncate, 

 moderately, somewhat acutely and not very regularly crenulate, the crenules 

 larger at the sides, the lateral ones more projecting, slender and subspini- 

 form; mesosternal process not extending behind the middle of the coxae, 

 the apex very finely acute, separated from the rather short and broadly 

 angulate metasternum by a long depressed space, in which the ridge is notably 

 acute; hind tarsi slender, the basal joint shorter than the second. Length 

 2.5 mm.; width 0.62 mm. Mississippi (Vicksburg). 



Resembles annexa somewhat, but differs in the prothorax, which 

 is parallel and evenly rounded at the sides in that species. 



Atheta replicans n. sp. Moderately stout and convex, piceous, the head 

 and abdomen black, the latter feebly paler basally, the elytra and legs pale; 

 surface shining, the micro-reticulation obsolete, the minute wavy strigilation 



