134 THE ORDER OF COLEOPTERA. 



E. Mentum large, concealing the maxilla; ; sternum not hollowed in front. 

 F. Scrobes linear directed beneath the rostrum; scape rarely extending 

 beyond the posterior border of the eyes, often not reaching it: 



BRACIIYDEKIDES. 

 F F. Scrobes often dilated, forming winglets {pterij(ji(i) on the sides of 

 the end of the rostrum, never linear and directed beneath ; scape 

 extending beyond the eyes (excei^t in Brachystylus,) : 



OTIORH YNCHIDES . 

 E E. Mentum small, not concealing the maxilla; ; sternum more or less hol- 

 lowed out in front to receive the rostrum. 

 G. Scrobes deep, linear, reacliiug the mouth. 



H.' Scrobes reaching the eyes. Rather large insects, either glabrous 



or pubescent MOLYTIDES. 



H H. Scrobes various in length ; small insects clothed with hairs or 



fine scales HYPERIDES. 



G G. Scrobes short, curved, sub-basal ATERPIDES. 



D D. Prothorax with ocular lobes ; pyes generally large, oval and transversal. 



I. Tarsi hispid, not spongy beneath; third joint not dilated nor 



bilobed BYRSOPSIDES. 



II. Tarsi spongy; third joint bilobed. 



K. Rostrum widened and hollowed triangularly at the end ; 

 scrobes confluent on the under side of rostrum : 



PROMECOPIDES. 

 K K. Rostrum more or less enlarged, but not notched at the end; 

 scrobes shallow and incomplete posteriorly : 



CYLINDRORHINIDES . 



Section 2. Longir o sir e s . 



First Sub-seclion — Syxmerides. Anterior coxtc nearly or quite contiguous; never 

 with a groove between them for the reception of the rostrum. 



A. Antennae elbowed, first joint much longer than the others. 



B. Body oblong, cylindrical, covered with a fine powder ; tarsal claws soldered to- 

 gether at base Lixides . 



B B. Body not cylindrical and pulverulent ; ungues free. 

 C. All the tibite terminated with a claw. 

 D. Thorax longer than wide, swollen anteriorly ; narrowed behind ; eyes 



round Otidocephalides . 



D D. Thorax narrowest in front; eyes oval or oblong. 



E. Body rough; eyes almost or quite contiguous above; abdominal sutures 



very deep Prionomerides. 



E E. Body smooth, glabrous or pubescent. 



F. Body elongate, sides parallel, glabrous, punctured; usually black or 



blueish Magdalinides . 



F F. Body oval ; usually brownish and pubescent, and often variegated. 

 G. Tibia; slightly compressed and hollowed on the inner side ; rather 



large insects ; inhabit pine trees Hylobiides. 



G G. Tibiae round ; small insects ; usually found on low plants : 



Erirhinides 

 C C. Tibite unarmed or simply mucronate at the end. 



