THE SHOET-WIXGED SCAVENGER BEETLES. 



367 



crawl into the deepest recesses of caves each day and emerge again 

 at night. So far lucifuga has only been found in caves, and. like 

 Quedius spelwus Horn, has probably inhabited them too short a 

 t ime to entirely lose the eyes. 



Subfamily II. STAPHYLININAE, 



Rather large or medium-sized black or brown species having the 

 antenna? 11-jointed. situated at the front margin of the front: 

 spiracles of the thorax visible: front eoxaa large and conical; tro- 

 chanters of hind legs prominent ; abdomen strongly margined. The 

 principal literature treating of the North American species of the 

 subfamily is as follows : 



Horn. — -''Synopsis of the Quediini of the United States." in 



Trans. Amer. Ent. Soc. TIL 1878. 149-167. 

 Horn. — ''Synopsis of the species of Staphylinus and the more 



closely allied Genera inhabiting the United States." in 



Trans. Amer. Ent. Soc. VII, 1878. 185-200. 

 LeConte. — "Short studies of North American Coleoptera." in 

 ' Trans. Amer. Ent. Soc. Till. 1880. 168-174. Tabulates the 



genera Lept acinus, Xantholinus and L&ptolinus. 

 Horn. — ''Synopsis of the Philonthi of Boreal America." in 



Trans. Amer. Ent. Soc. XI. 1884. 177-244. 

 Casey. — See above under Aleocharina?. 



Three tribes comprise the subfamily, all of which are repre- 

 sented in the State. 



KEY TO TRIBES OF STAPHYLININ^. 



a. Side margins of the thorax simple. Tribe I. Quedihsti, p. 367. 



au. Side margins of the thorax double. 

 b. Antenna? widely separated at base. 



Tribe II. Staphylinini, p. 373. 

 hh. Antenna? rather close together at base; elytra often reddish, and in 

 most species overlapping along the suture. 



Tribe III. Xantholinixi. p. 394. 



Tribe I. QUEDIINI. 



The members of this tribe have the antennae inserted at the front 

 point of the side margin of the front : head usually with a distinct 

 suture beneath the eyes: thorax smooth and glabrous with but few 

 dorsal punctures, its side margin single and acute: tarsi in our spe- 

 cies 5- jointed. Three of the four recognized genera are repre- 

 sented in the State. 

 [24—23402] 



