1334 FAMILY LXII. ANTIIICIDJE. 



//. Thorax relatively small, not quite as long as wide, sinuate at 

 the sides near base; antenna 1 with an abrupt though feeble 

 three-jointed chili; pubescence consisting of l\vo sets of hairs. 



XIII. SAPINTUS. 



////. Thorax abruptly sloping and flattened in front; head strongly 

 triangular; body stout and convex. XIV. AMBLYDERUS. 



V. NOTOXUS Geoff. 1762. (Gr.. "back f sharp.") 



The members of this genus are easily distinguished by the tho- 

 racic horn which extends in a sort of hood over the head and by tin- 

 short tarsi with the next to last joint slightly dilated. Five of the 

 32 species recognized by Casey have been taken in the State, while 

 another may occur. 



K10Y TO INDIANA SPECIES OF NOTOXUS. 



a. Elytra uniform purplish black. 247<>. BICOLOR. 



mi. Elytra more or less variegated in hue. 



1>. Elytra black or piceous. with pale markings. 



f. Elytra each with two large oblique spots of pale tint; elytral tips 



truncate in female. 2477. TALPA. 



ci'. Elytra crossed by two pale crossbars, one before, the other behind 



the middle, these interrupted at suture; elytral tips rounded in 



both sexes. 247S. BIFASCIATUS. 



lili. Elylra pale, will) a single black crossbar behind middle, which is 



more or less produced forward along the suture; usually also with 



other dark markings. 



(/. Dark crossbar of elytra placed at apical fourth and continued along 



the suture to the base; also usually an elongate dark spot each 



side. 2470. ANCIIORA. 



dil. Dark crossbar just behind middle, continued along suture but a 



short distance. 



e. Thoracic horn broader, always distinctly but finely toothed on 

 sides; elytra each with an irregular subapical dark spot and 

 with two small spots near scutellum. 24X0. MONODON. 



ee. Thoracic horn narrower and more elongate, never toothed; ely- 

 tra! tips dark in color, the sides behind basal third also dark. 



APICALIS. 



2476 (791G). NOTOXVS BICOLOK Say. Amer. Ent., I. 1824. 21 ; ibid. I, 21. 



Head and apical half of antenna? fus- 

 cous ; thorax, legs and under surface red- 

 dish-yellow; elytra purplish-black, clothed 

 with a fine, prostrate, silken, gray pubes- 

 cence. Thorax oval, slightly broader than 



long; horn rather broad, obtuse at tip, its 



Fig 58], X 9. (After Say ) 



sides coarsely toothed; its crest margined 



and finely serrate. Elytra with tips rounded and alike in the sexes: sur- 

 face finely, not densely punctured. Length 3.f> mm. (Fig. 582.) 



