212 WILLIAM T. M. FORBES 



(10) C. limosipennella Duponchcl (laticortiella, Clemens). 

 Alar expanse: 10.5-12.5 mm. 



Locality: Northeastern United States (. Tune- July ). 

 Food plant: Elm. 



Larval case: (fig. 127b) : Brown; rather broad; smooth except for upper 

 edge which is more or less serrate and slightly sinuate; 

 mouth deflected to GO degrees; posterior end a trifle wider 

 than middle of case, flattened to a slightly curved edge ; 

 1011 mm. long. 



Locally importan't in this country as a pest of the elm. In Europe also 

 recorded from alder and birch. 



(20) C. corylifoliella Clemens. 



Alar expanse: 8-9 mm. 



Localities: Pennsylvania; Maryland; Virginia (June- July). 



Food plant: Corylus americana. 



Larval case: Dark brown; rather broad; rough and fibrous; upper edge 

 serrate; mouth deflected to 90 degrees; posterior end 

 narrower than middle of case, flattened to a slightly curved 

 edge; 6-6.5 mm. long. 



(21) C. alniella Heinrich. 



Alar expanse: 8-9 mm. 



Localities: Maryland; Virginia (June and early July). 



Food plant: Alnus. 



Larval case: As in corylifoliella Clemens. 



The only appreciable difference between reared specimens of this species and 

 coryifoliella is in the somewhat darker and more distinctly marked brown annula- 

 tions on the antenna of the latter. It is quite probable that it will eventually 

 prove to be a synonym of Clemens' species. 



(22) C. lentella Heinrich. 



Alar expanse : 8 mm. 



Locality: Long Island, New York (June). 



Food plant: betula lenta. 



Larval case: Gray brown; broad, smooth except for upper edge which is 

 markedly serrate; mouth deflected to 45 degrees; posterior 

 end narrower than middle of case, flattened to a straight 

 edge; 4.5-5 mm. long. 



IV. Moths with fore wings yellow, unicolorous or golden yellow, more or less, 

 striped with white; not dusted or spotted. Antennae with basal joints thickened 

 or slightly tufted. Larval cases with posterior ends flatly compressed. 



(23) C. ochrella Chambers. 



Alar expanse: 12 mm. 



Locality : Kentucky ( June ) . 



Food plant: Unknown. 



Larval case : Unknown. 



A dull dark yellow, unicolorous species with basal third of costa a trifle darker 

 than ground color of fore wing. The only described species of this kind from 

 North America. 



(24) C. gaylussaciella Heinrich. 



Alar expanse: 10 mm. 

 Locality: Falls Church, Virginia (June). 

 Food plant: Gaylussacia baccata. 



Larval case: Brown; cylindrical; widest just beyond middle; tapering 

 slightly to both ends; mouth deflected to 90 degrees; 

 posterior end rounded; 6-6.5 mm. long. 



Close to cretaticostella Clemens but distinguished by characters given in the 

 table. 



