THK siioirr-w i\(;i:i) s«' a\i'\(;i'I! i:i:i;ii,i:s. 47:5 



rounded so as to leave an aiiu'le in wliii-li llic wiii^s arc xisihlr; 

 foiirtli and sixth joints of atitciiii.-e smalji'i' than t lie lit'lli and 

 sevcntli. \n species is at lian«l Inmi the Slnte. '/'. /i nihrial us Le<'., 

 .7 mm. in h'n<it li. darl< reddish or cliest mn -lirow n. Ic^s slight I y |)alcr, 

 |)rol)al)ly occurs in tlic northern <-iinnties. 



Trilic II. (►SOKll.XI. 



Ratliei- stont. hhacU or i)icee,us. more or less eylindrical species 

 having tlu' middle coxe cont iii,iious ; tarsi 5-joiiited ; mandibles stout, 

 not toothed; abdomen not mariiined. Oui- two ji'enei-a are treated 

 by: 



LeConfc. — hi Trans. Amei-. Knt. Soc.. W. 1S77. iMo-'iKi. 



KKY TO GENEBA OK OSOiaiNI. 



a. Front tibiio armed witli spines; body cylindrical, pubescent. 



LXXVI. OsoRUs. 

 an. Front (il»i:e un;irnied: txuly sulx-yliiidrii-al, .ij;ial)r()us. 



LXXVII. IIOI-OTKOCIIUS. 



LXXYI. Os(wius T;atr. 1S29. 



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

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

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

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

 kno\\ni North American species. 



914 (2701). OsoRirs pi^vnifrons Lee, Trans. Anier. Ent. Soc, VI, 1ST7. 

 215. 

 Elongate, cylindrical. Black, shining; antennjc. 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 cc.nverging to base; disk sparsely and coarsely punc- 

 tate, with a wide, sniootii nu'dinn striiic. Klylra narrower at base than 

 thorax at apex. si)arsely, coarsely and sliallowly punctali'. Alidomen as 

 wide as elytra, finely granulate. si)arsely and <'oarsely punctate. Eengfh 

 7-S mm. 



Lawrence and ('I'awl'nrd count ies: rare. May 17 May 2.'?. Oe- 

 eui's beneath stones and ions in damp phaces. A iiieinbcr of the 

 Anstrori])arian I'anna. 



Dlo (2702). O.soitn s i.ATirEs (Jrav., M<ai. Col. .Micr., ISOO, lOS. 



lOlongate, cylindrical. I*.lackish-])ice()us, shining, rather tiiickly clothed 

 with yellowish hairs: anleuna' and legs pale retldish-brown ; thorax and 

 elytra often clicstnnt bi-()\vn. Head as wide as thorax, r;ither coarsely and 

 more closely punctate; front less Hatlened. 'I'horax as in planifrons but 



