STAPHYLINID.E. 93 



more than their own length from the base, the tempora less prominent, 

 straight and parallel for a long distance, then broadly rounding to the 

 base, the carinae distinct but not extending beyond the middle; antennae 

 rather long and heavy, dark, paler basally, the second and third joints 

 subequal, fourth and fifth about as long as wide, the remainder missing 

 in the type; prothorax unusual in the genus, only about a fifth wider than 

 long, parallel and with evenly, very moderately rounded sides and broadly 

 arcuate base, unimpressed; elytra a little shorter than wide, more than 

 a fourth wider, the suture two-fifths longer, than the prothorax, the apices 

 externally broadly truncate; abdomen parallel, very slightly narrowing 

 apically, much narrower than the elytra, the fifth tergite a little longer 

 than the fourth, the sixth (cf ) transversely truncate at tip, the truncature 

 only very minutely and feebly uneven and with simple obtuse angles 

 at the sides; interval between the mesosternal process and the broadly 

 angulate metasternum unusually long, depressed. Length 2.7 mm.; 

 width 0.7 mm. Kansas (Sedgwick Co.). 



Distinguishable at once by its coloration, sculptureless surface, 

 narrow head and prothorax and male sexual characters. 



Atheta rusticula n. sp. Much smaller, somewhat slender and only 

 slightly convex, rather shining, the abdomen polished, the micro-reticu- 

 lation large, distinct, large and transversely polygonal on the abdomen; 

 punctures fine, asperulate, somewhat close-set, sparse on the abdomen, 

 the vestiture fine, pale, moderately close anteriorly; color testaceous, 

 the head a little darker, the elytra paler and more fiavate, uniform through- 

 out, the abdomen gradually blackish posteriorly, the legs very pale; 

 head only slightly wider than long, fully three-fourths as wide as the 

 prothorax, the eyes moderately convex, at three-fourths their length 

 from the base, the tempora equally prominent, parallel for a short dis- 

 tance behind the eyes, the carinae fine and far from entire; antennae 

 infuscate, paler and slender at base, rather short, gradually strongly 

 incrassate, the second joint longer than the third, which is twice as long 

 as wide and obconic, fourth distinctly wider than long, the tenth nearly 

 twice as wide as long, the last conoidal and longer than the two preceding; 

 prothorax two-fifths wider than long, parallel, the sides moderately 

 rounded, the median line finely impressed basally and joining a feeble 

 ante-scutellar impression; elytra much shorter than wide, the sides feebly 

 diverging, very little wider and barely a fifth longer than the prothorax; 

 abdomen slender, abruptly much narrower than the elytra, parallel, 

 with nearly straight sides, the fourth and fifth tergites equal, longer than 

 the others. Length 1.7 mm.; width 0.48 mm. New York (Catskill 

 Mts.). 



The female type of this very small species has the sixth tergite 

 rounded at tip; it may be compared with nympha Csy., but has 

 a relatively longer head, shorter elytra and narrower abdomen. 



Atheta limulina n. sp. Slender, moderately convex, shining, the 

 ground sculpture as in the preceding, the punctures minute and rather 



