214 WILLIAM T. M. FORBES 



Larval case: Gray; covered with particles of frass on posterior fourth; 

 along upper anterior portion of three-fourths of its length 

 a shining shield formed from part of the seed capsule 

 of the food plant; cylindrical; slender; mouth deflected 

 to 90 degrees; 4-4.8 mm. long. 



(31) C. borea Braun. 



Alar expanse: 15-16 mm. 

 Locality : Cincinnati, Ohio. 

 Food plant: Polygonum scandens. 



Larval case: Blackish brown; stout; cylindrical; mouth slightly deflected; 

 8-9 mm. long (From Miss Braun's description). 



(32) C. biforis Braun. 



Alar expanse: 11.5-12.5 mm. 



Locality: Cincinnati, Ohio. 



Food plant : Luzula campestris. 



Larval case: "slender, cylindrical, tapering to the three-valved apex. The 

 sides of the obtuse apical angles of the valves are very 

 short; from the point of union of adjacent valves, a 

 gradually lowering ridge runs about halfway down the 

 case"; 8-8.5 mm. long. (From Miss Braun's description). 



(33) C. coenosipennella Clemens. 



Alar expanse: 11.5-12 mm. 

 Locality: Eastern United States. 

 Food plant: Stellaria p\ibera. 



Larval case : Grayish ; " decorated with numerous dark reddish granules ; " 

 cylindrical; mouth strongly deflected; 6 mm. long. 



(34) C. cratipennella Clemens. 



Alar expanse: 14.5 mm. 



Locality: Eastern United States (May and early June). 



Food plant: Seeds of Juncus. 



Larval case: Grayish ochreous, shading to reddish brown at apex; cylin- 

 drical; smooth; unornamented; mouth deflected to 45 

 degrees; 8 mm. long. 



(35) C. shaleriella Chambers. 



Alar expanse: 13.5-15 mm. 



Localities: Kentucky; Ohio (August to September). 



Food plant: Seeds of Polygonum punctatum. 



Larval case: Pale straw color; elongate; slender; tapering gradually to 

 pointed apex; decorated from mouth with four or five 

 narrow strips of leaf extending backward four-fifths the 

 length of the case, and by seven or eight distinct lines of 

 frass extending backward about ^4; 10-11 mm. long. 



(36) C. caespititiella Zeller. 



Alar expanse: 11-12 mm. 



Localities: Maryland; Virginia (May-June). 

 Food plant: Seeds of Juncus. 



Larval case: Pale straw color to pale gray brown; cylindrical; smooth; 

 undecorated; mouth deflected to 45 degrees; 6-6.5 mm. long. 



(37) C. encodes Braun. 



Alar expanse: 12 mm. 



Locality: Cincinnati, Ohio (September). 



Food plant: Seeds of Aster ericodes. 



Larval case: Pale straw color to ashy brown; rather densely covered with 

 pappus from flowers of food plant which extend beyond 

 the apex; mouth deflected; 4.5-5 mm. long. 



