50 MEMOIRS ON THE COLEOPTERA. 



Atheta (Micrsarota) reperta n. sp Moderately stout and convex, strongly 

 shining, the micro-reticulation very fine and nearly obsolete, moderately 

 large but feeble on the abdomen, the punctures very fine and rather sparse, 

 wholly inconspicuous; pubescence somewhat coarse; color black, the pro- 

 notum piceous, the elytra but slightly paler, the legs pale piceo-testaceous; 

 head rather transverse, parallel, the convex eyes larger, at scarcely more 

 than their own length from the base, the tempora not swollen beyond them, 

 the carinse extremely fine, extending anteriorly a short distance from the 

 base; antennae blackish, moderately short, the joints from the fifth moder- 

 ately stout and subparallel, transverse, the last gradually pointed, a little 

 longer than the two preceding, the second and third moderately elongate, 

 the latter only a little the shorter but more obconic; first joint stout; pro- 

 thorax slightly wider than the head and a little narrower than the elytra, 

 moderately transverse, the sides parallel and somewhat feebly, subevenly 

 arcuate, unimpressed; elytra and abdomen nearly as in the preceding; hind 

 tarsi slender, the basal joint much more elongate, almost as long as the next 

 two. Length 1.65 mm.; width 0.35 mm. Iowa (Iowa City). 



The two specimens of this species were labeled by Prof. Wickham 

 "Nest a." I have placed with them a single example from Keokuk. 



Atheta (Micrearota) definita n. sp. General form and coloration nearly 

 as in reperta, shining, the reticulation obsolete, rather coarse but feeble on 

 the abdomen, the punctures very fine, not close and not at all asperulate, 

 the vestiture short and inconspicuous, head only a little wider than long, the 

 eyes at about their own length from the base, the tempora slightly swollen 

 and just visibly more prominent, the carinae very fine, extending beyond 

 the middle; antenna? nearly similar, the joints from the fifth rather stout, 

 subparallel, transverse, the last arcuately pointed, fully as long as the two 

 preceding, the first short and stout, the second considerably elongated, the 

 third much shorter and strongly obconic; prothorax moderately transverse, 

 a little wider than the head and much narrower than the elytra, the sides 

 subparallel, almost evenly and moderately arcuate, unimpressed; elytra 

 nearly as in the preceding, the abdomen relatively a little narrower and not 

 so parallel, very feebly narrowing apically, the sides not so straight, very 

 slightly arcuate, the tergites similarly proportioned ; basal joint of the hind 

 tarsi distinctly longer than the second. Length 1.6 mm.; width 0.33 mm. 

 Texas (Austin). 



Allied rather closely to reperta but less parallel, the head and 

 prothorax relatively smaller, the abdomen slightly narrower and 

 not so parallel and the tempora more swollen. I have placed with 

 the types two examples which I took at St. Louis, Mo. In neither 

 case were they associated with ants so far as observed. 



Atheta (Micrearota) versuta n. sp. Coloration and sculpture as in definita, 

 very shining, the reticulation obsolete anteriorly, the minute punctures 

 sparse; head nearly as long as wide, subquadrate, the eyes at more than their 

 own length from the base, convex and prominent, the tempora swollen basally 



