THE DARKLING BEETLES. 1245 



present than absent and the tarsi are pubescent beneath. Nine of 

 the 17 tribes recognized by LeConte and Horn are known to be 

 represented in the State. 



KEY TO IKDIAXA TBIUES OF TK.XEKKIO.MX.B. 



0. Front cf head entirely corneous or horn-like In texture, never hinged 

 with a leather-lil^e clypeus. 

 h. Tarsi not compressed, their first joint moderate or elongate, never 

 very short ; cheeks not sulcate. 

 c. Eyes less prominent than the sides of front, more or less trans- 

 verse, always emarginate in front. 

 rl. Xext to last joint of tarsi entire. 



c. Front coxa? rounded; middle ((jx.l' with trochantin ; antenna' 

 with third joint usually longer than those following. 

 f. Front feeljly dilatud at the sides; tarsi with silken puhes- 

 cL'ui-e beneath; form elongate, rather slender; size large, 

 usually 12 or more mm. 



Trihe I. Texkoriomxi. p. l-4."i 



//. Front broadly dilated at sides, emarginate in front ; front 



tarsi of male dilated ; form short, oval ; smaller 6-10 nun. 



Tribe II. Pedixi.xi, p. 3l!."il. 

 CI'. I'roiLl c-oxte subtraiisverse : middle coxaj without trochantin ; 

 third joint of antennte short; tarsi yubi'sct'Ut, thr last joint 

 lon,^': tcirm oval or rlongate; length less than 12 mm. 



Tribe III. Ur.oMi.xi. p. 12.":!. 

 <lil. Xoxi to las! joint of tarsi bilobed ; surface coarsely punctured; 

 Icijitb lei-s than ll nun. Tribe IV. IIetei!OTAKSIX[, p. 12.">><. 



<■(-. Eyes more jirouiiuenl than the sides of front, usually rounded, fee- 

 lily or not emarginate: form usually oval or rounded, convex: 

 length less than 7 nun. Tribe V. Diaperi.ni, p. 1200. 



hli. Tarsi compressed, their first joint short; cheeks sulcate; surface very 

 rough. Tribe YI. Boletophagixi. p. 12Cii>. 



(III. Front with a coriaceous or leather-like margin, or a coriaceous band 

 between it and the labrum ; third joint of antenna; long. 

 ;/. Sides of front not obliquely elevated : abdomen not pedunculate ; 

 (inter joints of anteuuie broader; head not defiexed. 



Tribe VII. IIkeopim, p. 12ij.s. 

 I/!/. Sides of front obliquely elev.-ited. 



h. Inner wings wanting; metasternum very short; body robust, con- 

 vex. Tribe VIII. Meea( axthixi, p. 12(l'.l. 

 lili. Inner wings present; melasternum long; body slender. 



Tribe IX. SrRfixoYi.iixr. ji. 1270. 



Tribe I. TEXEBRIOXIXI. 



Rather elong-ate, unifurin black oi- pieeuUs sjjeeies (if medium or 

 large size, having the head prolonged, but scarcely narrowed behind, 



