TRIBE I. — GALEATINI. 455 



ff. Areolae of hood and paranota mostly hyaline. 

 g. Hood large, globose, evenly rounded dorsally; length 3.5 — 3.9 

 mm. 410. pallipes. 



gg. Hood smaller, not globose, its sides meeting at a sharp angle 

 along median dorsal line; length 3.7 mm. 



411. HEIDEMANNI. 



dd. Smaller, length not over 3 mm.; crest of hood angulate; apical 

 dark bar of elytra with two or three hyaline cells. 



412. BELLULA. 



405 (649%). Corythuca bulbosa Osborn & Drake, 1916, 232. 



Subquadrate. Body black; antenna? and legs yellowish, tips of tarsi 

 and fourth antennal brownish; hood fuscous-brown, the center of a few 

 cells hyaline; paranota fuscous, the inner one or two rows of cells 

 hyaline; pronotum blackish, its apical half paler; elytra fuscous-brown, 

 the center of two cells near apex and the inner one or two rows of cells 

 of subcostal area, clear hyaline. Hood very large, its crest nearly three 

 times as high as median carina, compressed near middle, front portion 

 triangular, subvertical ; hind portion globose, its cells large, irregular. 

 Median pronotal carina arched, spinose in front and with two or three 

 large cells; lateral carina? very short and low without areolae. Costal 

 margins of elytra straight, parallel, their spines short, dark. Length, 

 4.3 — 4.6 mm. 



Posey Co., Ind., Sept. 22; beaten from its host plant, the 

 bladder-nut, Staphylea trifolia L. Probably occurs on that plant 

 throughout the southern half of the State. Its known range 

 extends from New Jersey and Maryland west to southern Indi- 

 ana. Our largest and darkest species of the genus. 



406 (644%). Corythuca coryli Osborn & Drake, 1917, 299. 



Oblong, subquadrate. Body black, apical ventral segment in part 

 brown; antennae and legs dull yellow; nervures of hood brown, of para- 

 nota whitish, cells of both hyaline; elytra with wide basal and preapical 

 brown cross-bars, the intervening space and extreme tip hyaline. Mar- 

 ginal spines long, tipped with black. Hood slightly more than twice as 

 high as median carina, the cells of its globose part very large. Median 

 carina arched and with a single large cell. Length, 2.8 mm. 



Vigo Co., Ind., June 12, swept from its host plant, the hazel- 

 nut, Cory/us americana Walt. Newfoundland, N. J., July 6 

 (Davis) . Recorded heretofore only from Maryland and Vir- 

 ginia. 



407 (639%). Corythuca cydoni^e (Fitch), 1861, 25. 



Oblong or subquadrangular. Body black; abdomen with apex and 

 sometimes the sides in part, dull yellow; antennae and legs yellow, tarsi 

 and fourth antennal in part darker; hood with nervures and part of the 

 areolae brownish; paranota yellowish with large brown spot each side; 

 elytra with basal and preapical fuscous-brown cross-bars, the latter 



