Casey — Observations on the Staphylinidae. 249 



long as the next three combined. Length 2.4 mm.; width 0.65 mm.; 

 Utah (St. George), — H. F. Wickham angnlata n. sp. 



The very numerous examples of dissecta before me, from 

 various parts of the country, are fairly homogeneous but, at 

 the same time, there may be some subspecific forms among 

 them. The Texan specimens, for example, are generally 

 smaller in size, with rather paler legs and elytra and usually 

 somewhat less dense abdominal sculpture than those from 

 central New York, but the differences are slight and scarcely 

 specific. The species of the first group of the table consti- 

 tute a peculiarly American type, those of the second being 

 similar in every way to the European sulcata. The palae- 

 arctic sulcatula forms still another group of the genus, 

 having smaller elytra, with the sides more diverging from the 

 base and impressed throughout the length along the suture 

 and with a rather more elongate scutellum. The abdomen 

 in angulata is much more asperulate in sculpture than in 

 suhsimilis and texana, the latter being rather closely allied, 

 the former being distinguishable from texana by the more 

 broadly rounded basal angles of the head and narrower ab- 

 pomen, as well as the thicker basal joint of the antennae ; 

 a third specimen, from Austin, is placed at present with the 

 two types, although the prothorax is much more rounded 

 and less oblique at the sides of the apex and the strong con- 

 vergence and sinuation of the sides posteriorly begins only 

 slightly before the middle ; the form in fact appears to be 

 strikingly different, but it may be sexual in origin. 



liCptagria n. gen. 



The species of this genus are among the more minute of 

 the present subtribe, rather closely allied to Falagria in 

 general structure but with the prothorax less constricted 

 behind and having a finer, though very evident, sulcus. 

 They differ from Falagria especially in having the scutellum 

 flat, simply granulose, though with the granules tending to 

 coalesce into short irregular longitudinal lines, and frequently 

 parted along the middle in much the same manner as in 



