TRIBE I. — GALEATINI. 461 



arched; cells of elytra yellow or brownish-yellow. 420. ulmi. 



ee. Hood very little higher than median carina, over twice as long 



as high; median carina strongly arched; cells of elytra hyaline. 



421a. var. mali. 

 id. Elytra with both basal and apical dark cross-bars, the intervening 

 area pale. 

 /. Hood, viewed from the side, long and low, very little higher than 

 median carina. 

 g. Smaller, length less than 3.5 mm; apical dark bar of elytra ill 

 defined, occupying only the apical fourth; paranota with small 

 dark spot or none. 421. arcuata. 



gg. Larger, 4 or more mm. ; apical dark bar well denned, occupying 

 the apical third ; paranota with distinct dark spot. 



422. PRUNI. 

 //. Hood, viewed from the side, more elevated, crest rounded, usually 

 nearly twice as high as median carina. 

 h. Larger, length 4 or more mm. ; cross-bars of elytra dark fus- 

 cous-brown, the apical one with two or three large hyaline 

 cells; front of hood nearly vertical. 423. ^SCULi. 



hh. Smaller, not over 3.7 mm. ; front of hood oblique or declivent, 

 not subvertical. 

 i. Cross-bars of elytra pale brown, the basal one extending for- 

 ward to humeral margin; hood, viewed from the side, twice 

 as long as high ; median carina lower than tumid elevation 

 of elytra. 424. pergandei. 



ii. Cross-bars of elytra dark brown or fuscous, the basal one not 

 reaching humeral margin; hood less than twice as long as 

 high; median carina as high as or higher than elevations 

 of elytra. 

 j. Hood nearly twice as high as median carina, its cells more 

 than twice as large as those of paranota. 

 k. Areolae of apical half of elytra whitish, subopaque, much 

 smaller than in contractu; front margin of apical dark bar 

 not curved up the sutural area. 425. juglandis. 



kk. Areolae of apical half of elytra clear hyaline, much larger 

 than in juglandis; front margin of apical dark bar curved 

 forward at middle along the sutural area. 



426. CONTRACTA. 



jj. Hood but slightly higher than median carina, its cells less 

 than twice the size of those of paranota. 

 /. Median carina strongly elevated; apical cross-bar of elytra 

 well defined and with a large hyaline spot near middle. 



427. EXIGUA. 



//. Median carina much less elevated; apical bar poorly defined, 



very few of its cells wholly clouded. 428. celtidis. 



417 (649%). Corythuca mollicula Osborn & Drake, 1916a, 12. 



Oblong, slightly narrowed behind. Body black; antennae, beak and 

 legs dull yellow; cells of upper surface whitish-hyaline, veins faintly 

 yellow; veins of bulbous crest of hood, a small vague spot on paranota, 



