738 FAMILY XXX\'II. — ELATEEID^. 



IvEY TO INDIANA QENEKA OF COBYMBITINI. 



a. Front or elypeus convex, its edge higher than the labrum ; mouth in- 

 ferior and applied to the prosternum in repose. 

 6. Front truncate, not margined behind tlie labrum, though higher than 

 it; tarsal claws simiile; size 7 or more nun. 

 e. Side mar-gins of thorax bent downward in front. 



XXX. Agriotes. 

 ec. Side margins of thorax straight. XXXI. Dolopius. 



hi). Front margined behind the labrum ; tarsi slightly lobed, the claws 

 with comb-like teeth ; size small, not more than mm. 



XXXII. Glyphonyx. 

 aa. Front flattened; mouth horizontal or anterior (except in Sericus). 

 il. Front margined. 



e. Tarsal claws with comb-hke teeth ; color usually dull reddish- 

 brown or piceous. XXXIII. Melanotus. 

 re. Tarsal claws simple. 



f. Hind tarsi with first joint scarcely looser than second; color 

 dull sooty brown. XXXIV. Limonius. 



Jf. Hind tarsi with first joint elongate. 

 (J. Prosternal lobe very short. 



h. AntenuEe 11-joiuted ; metasternum acute. Campylus. 



///(. Antennre 12-jointed; metasternum obtuse. I'lTYOBirs. 



gg. Prosternal lobe long. 



L Sutures of prosternum single; thorax usually distinctly 



longer than wide. XXXV. Athois. 



il. Sutures of prosternum double ; thorax scarcely longer than 



wide, more convex. XXXVI. Leptoschema. 



diJ. Front not margined; usually slightly concave. 



j. Sides of mesosternal cavity not protuberant; size usually medium 

 or small ; color rarely uniform black. 

 7.-. Tarsi simple, filiform. 



I. Prosternum not lobed in front, the sutures straight; third joint 



of antennte small; length 6.5-7 mm. XXXVII. Bladus. 



U. Prosternum lobed in front. 



m. Lobe of prosternum short, the sutures excavated in front; 



elytra striate ; length 11-12.5 mm. XXXVIII. Nothodes. 



mm. Lobe of prosternum long. 



II. Front convex ; hind coxal plates scarcely narrower at the 

 outer end; length G.5-7.5 mm. XXXIX. Serious. 



in,. Front more or less flattened; coxal plates distinctly nar- 

 rower at outer end. 

 o. Tarsal claws simple; color often variegated. 



XL. CORYMBITES. 



00. Tarsal claws with a broad tooth at base; piceous- 

 bronzed, elytra reddish-brown. XLI. Oxygonus. 



II: Tarsi with the second and third joints lobed beneath. 



.. „., XLII. Asaphes. 



]]. Sides of mesosternal cavity protulierant ; size large 18 or more 



mm., color uniform black. XLIII. 'mei.anaotes. 



