416 G. R. CROTCH, M. A. 



Anterior claw deformed erythropteruS. 



Anterior claw acutely dentate. 

 Elytra yellow with black vittae. 



Surface areolate, tibiae with inner margin punctate lineellus. 



Surface smooth, metasternum and coxae black disintegrat us. 



Surface smooth, body beneath red; vittae above broad, suffused. 



tieniolatus. 



Elytra pale brown, smooth Lecontei. 



Elytra greenish -brassy, punctulate aMieolus. 



Elytra black. 



Broad, sub-depressed, with a yellow apical vitta semivittatiis. 



Narrow, convex, with numerous irregular punctures. ..semipunctatus. 



A. — Anterior external claws in the male very elongate, hroadly 

 dilated. 



G. erythropterus, (Say) Tr. Am. Phil, ii., p. 95. — Rather broadly oval, 

 sub-convex, opaque, black, legs, margins of ventral segments and elytra yel- 

 lowish-brown; thorax with the sides rounded, margin rather explanate. ; elytra 

 with the sides and humeral angle paler, closely reticulate, areolae small, but 

 visible, dorsal punctures obsolete; prosternal process acutely carinate, pos- 

 terior femora strigose, tibiae smooth, spurs shorter than first joint of tarsus, last 

 joint longer than fourth. % anterior external tarsal claw compressed and 

 broadly dilated, internal one elongate and sinuate. L. *37 inch. 

 Lake Superior, Pennsylvania. (Leconte, Horn.) 

 The posterior tibiae have a few punctures on the inner margin in 

 some examples. 



B. — Anterior external claw acutely dentate in male. 



G. treiiiolatus, Harris, N. E. F. vii., 164. — Ovate, sub-convex, bright ru- 

 fous; thorax with the anterior and posterior margins black, sides slightly 

 rounded, posterior angles rectangular; elytra yellow with the suture and three 

 vittae (not quite reaching base or apex) are each black ; the first vitta often con- 

 fused with the sutural line, and the two outer vittaa coalesce at their apex; 

 surface extremely finely alutaceous, dorsal punctures visible, confused ; inter- 

 mediate tarsi with the first joint equal to the three following; prosternal pro- 

 cess acutely carinate, posterior femora and tibiae finely punctulate. % anterior 

 tarsal claw dentate. 



Pennsylvania. (Leconte.) 



G. disintegrates, sp. nov. — Very near A. tceniolatus, but narrower, 

 slightly smaller, the vittse narrower, especially the outer one which is linear, 

 and branched at the apex; metasternum black; first joint of intermediate 

 tarsi slightly shorter. L. - 30 inch. 



Kansas, Arizona, Pennsylvania, Nebraska, Canada. (Leconte, 

 Horn.) 



