Casey — Observations on the Staphylinidae. 239 



cate or arcuate from a vertical point of view and the basal 

 margin is coarsely and strongly beaded ; the scutellar carina 

 is usually incomplete and frequently very fine. The elytra 

 and abdomen are much as in Chitalia and other genera of this 

 subtribe, but, on the former, the fine punctulation does not 

 become closer and granulif orm toward the scutellum as it does 

 in Chitalia, Falagrioma, Lissagria and perhaps some other 

 genera. Lorinota further differs from Chitalia in having 

 the impressions of the abdominal tergites gradually feebler 

 from the first to the third, and even more variably sculptured, 

 and in having the legs more slender, with the hind tarsi 

 longer, more filiform, equally slender throughout, with the 

 basal joint very much longer, sometimes almost as long as the 

 entire remainder. The apex of the elytra externally is 

 scarcely at all produced posteriorly and is either broadly 

 angulate or rounded. This genus is without doubt closely 

 related to the gigantic Mexican species, some 5 mm. or 

 more in length, for which Dr. Sharp proposed the genus 

 IStenagria,\i\)it, as the large extension of the prosternum before 

 the coxae is particularly mentioned as one of the most promi- 

 nent characters of Stenagria, I believe Lorinota will prove 

 to be distinct, since the ante-coxal part of the prosternum is 

 no more developed here than in Chitalia or any other related 

 genus that follows in the table given above. The species are 

 rather numerous and may be readily divided into two groups, 

 which are confined to special faunal regions, as follows : — 



Species of the Sonoran fauna, larger in size, the scutellum coarsely and un- 

 evenly elevated along the median line for a short distance from the 

 base, the elevation usually succeeded on the median line by a short 

 smooth depression 2 



Species of the Atlantic nearctic fauna, smaller in size and frailer in 

 structure, the scutellum with a very fine but even carina on the median 

 line, usually much abbreviated and variably so vflthin specific limits.. 5 



2 — Abdomen very minutely and sparsely punctulate throughout 3 



Abdomen finely and closely punctulate 4 



3 — Form rather stout, convex, black or piceous-black throughout, pol- 



lished, the legs dark red -brown, the antennae fuscous, paler toward 

 base and sometimes at apex; vestiture short and rather coarse but 

 sparse and wholly inconspicuous; head large, wider than long, the sides 

 behind the small and prominent eyes converging and slightly arcuate 

 for a long distance, the base abruptly arcuato-truncate, the angles 



