THE CIIECKEREn BF-KTLES. 



855 



VII. Zenodosus AVolcott. 11»1<>. (Or., a proper name.) 

 Eyes small, entire, lincly granulated; maxillary palpi moder- 

 ately eompressed; labial palpi triangular, moderately dilated; an- 

 tenna^ stout, club loosely and gradually formed, 3-jointed; tarsi ap- 

 parently 4-jointed, rather slender, elaw joint as long as those pre- 

 ceding united, claws simple. The only known species is North 

 American. 



1634 (518(5). Zenodosus sanguineus Say, Bost. Journ. Nat. 

 Hist, I, 1835, 162; ibid. II, 639. 



Elongate, ratlier slender. Head, thorax and under sur- 

 face fuscous-brown; npieal joints of antennte, legs and ab- 

 domen usually dull red ; elytra bright crimson or blood-red, 

 feebly shining. Head and thorax densely and confluently 

 punctate. Elji:ra coarsely, densely and rather deeply punc- 

 tate, the sides subparallel. Length 4.5-0.5 mm. (Fig. 336.) 



Kosciusko. IMarion. Putnam a!id Dubois counties; 

 scarce. A]-»ri] 17-Uecember 8. Occni>i beneath bark 

 and moss. 



VIII. Hydnocera Newm. 1838. (Gr., "swollen + horn.") 



Eyes eiilire. finely granulated; maxillary palpi cylindrical, 

 smaller toward apex of terminal joint; labial palpi elongate, 

 strongly dilated; antenna^ nearly filiform, club abruptly formed, 

 compact, subglobose. 2- jointed, the terminal joint very small; tarsi 

 apparenth' 4-jointed, rather slender, short, claws broadly toothed 

 at base. About 45 species of this genus are known from America 

 north of INIexico. Six of these have been taken in Indiana, while 

 three or four others perhaps occur. 



KEY TO INDIANA SPECIES OF HVDNOCERA. 



a. Thorax broader than long or the length and width subp(iual. 

 h. Elytra entirely covering the abdomen. 



c. Very elongate, strongly convex ; black, elytra witli a whitish cross- 

 bar just behind the middle. 1635. unifasciata. 

 CG. More robust and less convex ; elytra without crossbar. 



d. Flanks of thorax distinctly tuberculate; elytra not densely pu- 

 bescent, the humeri usually red. 1636. humeraus. 

 d(L Flanks of thorax broadly rounded; elytra very densely clothed 

 with short grayish pubescence. pubescens. 

 hh. Elytra shorter than abdomen. 



e. Head including the eyes narrow ; elytra parallel. pedalis. 



ee. Head including the eyes broad ; elytra more or less narrowing to- 

 ward their tips. 



