THE SIIOi;T-WlX<iKr> SCAVENGER UK KTI.KS. 47:5 



rounded so as to leave an angle in which the wing's are visible; 

 fourth and sixth joints of antenna? smaller th;m the fifth and 

 seventh. No species is at hand from the State. T. finihi-iatus Lee., 

 .7 mm. in length, dark reddish or chestnut-brown, legs slightly paler, 

 probably occurs in the northern counties. 



Tribe II. OSORIINI. 



Rather stout, black or piceous, more or less cylindrical species 

 having the middle eoxa? contiguous ; tarsi 5-jointed ; mandibles stout. 

 not toothed; abdomen not margined. Our two genera, are treated 

 by: 



LeConte.In Trans. Amer. Ent. Soc.. VI. 1877, 215-216. 



KEY TO GENERA OF OSOKIINI. 



a. Front tibia? armed with spines; body cylindrical, pubescent. 



LXXVI. OSORIUS. 

 (id. Front tibi:e unarmed; body subcylindric:il. glabrous. 



LXXVI I. IIOKOTROCITUS. 



LXXVI. OsoRirs Latr. 1S2!). 



Head almost as wide as thorax, the front more or less flattened 

 and sloping toward mouth; eyes small; antennas short, reaching 

 middle of thorax, first joint long, the others bead-like, gradually 

 larger. This genus is represented in tin 1 State by two of the three 

 known. North American speies. 



(2701). OSORIUS PLANIFRONS Lee., Trans. Amer. Ent. Soc., VI, 1877, 

 215. 



Elongate, cylindrical. Black, shining ; antennas legs and elytra dark 

 reddish-brown. Head as wide as thorax, minutely granulate, finely and 

 sparsely punctate, front distinctly flattened. Thorax widest at apex, sides 

 straight and distinctly converging to base; disk sparsely and coarsely punc- 

 tate, with a wide, smooth median stripe. Elytra narrower at base than 

 thorax at apex, sparsely, coarsely and shallowly punctate. Abdomen as 

 wide as elytra, finely granulate, sparsely and coarsely punctate. Length 

 7-8 mm. 



Lawrence and Crawford counties; rare. May 17-May 23. Oc- 

 curs beneath stones and logs in damp places. A member of the 

 Austroriparian fauna. 



915 (2702). OSORIUS LATIPKS (Jrav., Mon. Col. Micr., ISO*!, IDS. 



Elongate, cylindrical. Blackish-piceous, shining, rather thickly clothed 

 with yellowish hairs; antenna' and legs pale reddish-brown; thorax and 

 elytra often chestnut brown. Head as wide as thorax, rather coarsely and 

 more closely punctate; front less flattened. Thorax as in planifrons but 



