STAPHYLINID.E 4 2 7 



thorax; abdomen narrower and with rather finer punctures. Length 

 5.0 mm.; width 1.15 mm. Florida. 



So far as discoverable, the lateral anal styles in the male of pronus 

 are very short when compared with those of the female; in longistylus 

 they are much longer in the male than in the female of pronus. 



Acylophorus longicornis n. sp. Stout, convex, polished, deep black, 

 the elytral humeri faintly pallescent; legs pale flavo-testaceous, the 

 posterior but slightly more obscure; head scarcely as long as wide, the 

 eyes at their own length from the base, the sides behind them closely 

 punctulate; two frontal punctures much more widely separated than in 

 pronus; antennae slender, very much longer, extending far upon the 

 elytra, gradually clavate apically, black, with dense gray pubescence, 

 pallescent at tip, the second joint only a little longer than the third; 

 prothorax of the usual form but less narrowed apically, three-fourths 

 wider than the head, only very slightly wider than long; scutellum large, 

 with numerous close-set punctures, the margins smooth; elytra shorter 

 than wide, not quite as long as the prothorax, punctured throughout as 

 in pronus but rather less strongly or sparsely; abdomen sparsely but 

 much more evenly punctate than in pronus, the anal styles rather 

 short but with very aciculate apices. Length (cf ) 6.5 mm.; width 1.55 

 mm. New York (Peekskill). 



As no median process can be seen at the abdominal apex, and no 

 duplication of the stylets as in the female, I conclude that the type 

 is a male; it evidently belongs near densus Lee., but differs in its 

 more shining and more sparsely and evenly punctured elytra, with 

 pallescent humeri; the abdomen is similarly iridescent beneath but 

 not above and the fifth tergite is pale apically; the mandibles are 

 extremely close to the eyes as usual. 



In this genus the claws of the anterior tarsi are very much longer 

 than those of the intermediate or posterior tarsi, but I am unable 

 to perceive that they differ in size sexually as stated by LeConte. 



Subfamily STAPHYLINUSLE. 

 Staphylinus Grav. 



In the vicinity of tomeniosus Grav., I find a number of rather 

 distinct but hitherto uncharacterized forms, which have apparently 

 a fully specific value, the four following being valid and well 

 differentiated species beyond a doubt; the tomeniosus group is one 

 of the largest among the American representatives of the genus. 



Staphylinus pinorum n. sp. Smaller and rather more slender than 

 tomentosus but with similarly shaped head; body, legs and antennae 



