720 FAMir.Y XXXVII. F.LATErtTD.T;. 



XVI. CARDioPHORrs Esch. 18:56. (Gr.. "h.'art i l)oaring.") 



Small ooiivex species, clothed witli more or less abiimlant. pros- 

 trate pubescence. The antenna:' usually vary considerably in the 

 two sexes, those of the male longer and with joints 3 to 10 broader 

 in the middle than in the female; seutellum distinctly heart-shaped, 

 emarginate at 1)as(\ The North American species are treated by 



BlancJuird. — '"Kevision of the species of CordiopJiovun Esch. of 

 America North of iNlexico. " in Trans. Amer. Ent. Soe., XVI, 

 1889, 1-27. 



In this paper 31 species are recognized, tliree of which have 

 l)een taken in Indiana, while two others may occur. 



KEY TO INDIANA SPECIES Or CARDIOPHORUS. 



a. Thorax with liind angles obliquely truncate ; elytra each usually with 

 two yellow spots; hind margin of side pieces of prosteruum straight. 



1 355. CARDISCE. 



aa. Thorax with hind angles produced and carinate; elytra without spots; 



hind margins of side pieces of prostenuim with a deep notch next to 



the outer angle. 



h. Sides of mesosternal cavity prominent and nearly vertical in front ; 



upper surface densel.y covered with short prostrate yellowish hairs; 



legs reddish-yellow. 135G. convexus. 



hi). Sides of mesosteninl cavity not iirominent, obli(]ue in front. 



c. Second joint o>f anteun.-e longer Ihan wide and more than one-half 

 as long as third. 

 d. Prosternal process margined behind the coxji' ; pubescence of 

 upper surface sparse; legs wholly black. 1357. gagates. 



dd. Prosternal jirocess not margined behind the cox;ii; tarsi reddish- 

 brown. CONVEXIUAIS. 

 cc. Second .joint of anlemia- small, one-half as long as third; i)ro- 

 stei-nal spine distinctly margined; surface feebly bronzed. 



RoniSTis. 



I.'i55 (4104). C'ARDioPiioRi s CARDISCE Say, Trans. Amer. Phil. Soc, VI, 

 183G, 109; ibid. II, 604. 

 Elongate, convex. Black, rather thickly clothed with short grayish 

 pubescence; elytra each with a yellow spot before the middle and another 

 before the apex; these variable in size and shape, sometimes wholly lack- 

 ing, the front one sometimes extending obliquely forward to the humerus; 

 legs black, knees and tarsi reddish-yellow. Thorax very convex, slightly 

 longer than wide, sides rounded, less narrowed behind than in front. El.v- 

 tral stria' imncfate; intervals feebly convex, punctulate. Body beneath 

 shining, iiundulate with liner and coarsei- imnotui-es intermingled. Length 

 5.5-7.5 nnn. 



P"'rer|uent lienealli rubbish aioiiLi: Ihe beach of Lake Michigan. 

 Mav 13-Jnne 15. 



