SUBFAMILY X. < TIt( TLIOXIXJE. 



Tribe XV. CLEONINI. 



In this tribe the elytra extend but feebly over the flanks of 

 the metatliorax and abdomen, so that the angles on the sides of 

 the first ventral segment of the latter are uncovered and visible. 

 The body is never very stout, but usually elongate and more or 

 less subcylindrical; mentum large, flat; antenna? elbowed, some- 

 times feebly so, joints of funicle gradually broader, club elongate- 

 oval, annulated, pubescent and sensitive; tibise more or less 

 spined at tips, their articular surface on the sides, corbels want- 

 ing; tarsi in our species with brushes or pads of yellowish-brown 

 pubescence beneath, their claws ronnate or approximate at base. 

 In Indiana the adults are mostly found in the vicinity of water, 

 the larva? of a number of species feeding upon different kinds of 

 smartweed (Polygonum) , others upon dock, ragweed and wild 

 sunflower. The tribe has been reviewed by 



Casey, T. L. "Coleopterological Notices, III Cleonini," in 

 Ann. X. Y. Acad. Sci., VI, 181)1, 1TG 213. 



KEY TO EASTERN GENERA OF CLEOXIXI. 



o. Beak short, flat, stout, strongly carinate, somewhat dilated at tip; 

 thorax angulated at sides, constricted near apex; third joint of hind 

 tarsi emarginate, not spongy beneath. I. STEPIIANOCI.EOXT'S. 



aa. Beak cylindrical, not or feebly dilated at tip; thorax not angulated 

 at sides; third joint of hind tarsi usually bilobed and spongy beneath, 

 b. Beak shorter, stouter, more densely pubescent and often feebly di- 

 lated at tip; form usually stouter; pubescence usually arranged 

 in stripes. II. CLEOXUS. 



bb. Beak longer, more slender, more curved and not dilated at tip; form 

 less stout, often very slender; pubescence not or rarely in stripes. 



III. Lixus. 



I. STEPHAXOOLKOXTS Motsch., 1800. (Gr., '"crown of Cleonus.") 

 Antenna? stout, feebly elbowed ; first joint of funicle longer, 

 second equal to third, seventh forming part of club; tarsi hairy, 

 not spongy beneath, the hind ones with first and second joints 

 elongated. 

 491 (8513). STEPHAXOCLEOXUS PLr.Mi:i;rs Lee., 1876, 146. 



Elongate, robust. Black, thinly clothed with very short, fine, whitish 

 pubescence, producing a leaden lustre; elytra with two faint oblique denud- 

 ed bands, and a small polished spot near tips. Beak stout, shorter than 

 thorax, finely and confluently punctured, its median carina high, curved, 

 not reaching tip but extending onto head. Thorax quadrate, suddenly nar- 

 rowed near apex, sides nearly parallel, base broadly biemarginate; disc 

 finely and densely punctured, with large scattered punctures inter- 

 vening, carinate in front of middle, impressed behind. Elytra with humeri 

 obliquely truncate, sides subsinuate, obliquely prolonged behind; striae 

 coarsely and closely punctate; intervals flat, densely and finely punctured. 

 Length 9 11 mm. 



