STAPHYLINID,E. 85 



prolonged between the coxae, feebly and obtusely cuspidulate medially 

 and separated by a very long interval from the finely aciculate meso- 

 sternal process, the coxae very narrowly separated; hind tarsi slender, 

 the basal joint a little shorter than the second. Length 2.8 mm.; width 

 0.73 mm. Iowa (Cedar Rapids), Brendel. 



The female types of this species were included under cephalina, 

 but a more careful inspection shows that this is not correct, the 

 antennae being longer, with the fourth joint longer and the elytra 

 larger and more quadrate. The eyes in the following species 

 are relatively a little larger: 



Atheta (Delphota) regenerans n. sp. Coloration and sculpture nearly 

 as in the preceding, smaller in size and more slender; head transverse, 

 fully three-fourths as wide as the prothorax, the eyes rather convex, 

 large, slightly more prominent than the straight and parallel tempora 

 behind them and almost twice as long, the carinae scarcely entire; an- 

 tennae rather short and stout, very strongly incrassate, piceous, paler 

 basally, the second and third joints subequal, not much elongated, less 

 than twice as long as wide, fourth distinctly, the outer joints strongly, 

 transverse, the ninth almost twice as wide as long, the tenth not quite 

 so short, the last conoidal, barely as long as the two preceding; prothorax 

 large, not quite one-half wider than long, strongly rounded at base, 

 parallel and feebly arcuate at the sides, the latter rather straighter basally, 

 the angles very obtuse but distinct, the median line finely and feebly 

 impressed; elytra rather short and transverse, not wider, the suture 

 just visibly longer, than the prothorax; abdomen rather narrow, dis- 

 tinctly narrower than the prothorax and elytra, parallel, narrowing 

 perceptibly apically, with thin margins, the fifth tergite two-fifths 

 longer than the fourth; mesosternal process very aciculate, separated 

 from the angulate metasternal projection by a much shorter interval 

 than in the preceding and not exceeding a third of the thickness of the 

 middle femora. Length 2.25 mm.; width 0.55 mm. Iowa (Cedar 

 Rapids), Brendel. 



Differs greatly from lymphatica and cephalina in its larger eyes, 

 shorter and stouter antennae, broader prothorax and decidedly 

 in the structure of the intermesocoxal parts and in the apically 

 narrowed as well as more slender abdomen. 



Atheta (Delphota) perspicua n. sp. Parallel and moderately convex, 

 somewhat shining, the abdomen more strongly, the micro-reticulation 

 small, not strong, very feeble but not very fine and subtransverse on the 

 abdomen; punctures very fine, not very asperate, close-set, sparse 

 on the abdomen, the pubescence pale and distinct; color blackish- 

 piceous, the elytra wholly pale tawny, the apex and apical parts of the 

 basal segments of the abdomen pale, the legs pale; head almost as long 

 as wide, nearly three-fourths as wide as the prothorax, parallel and evenly, 



