Notes on North American S[>ecies of Nepticula. 91 



Over the last 10 or 12 mm. of the mine, it is deposited in a 

 fine black line through the middle. The cocoon is reddish 

 brown, often with a decidedly carmine tinge, oval and some- 

 what flattened. 



The pure white lustrous fascia (without a trace of golden) 

 and the white shining cilia distinguish this species from any 

 other I have seen. 



Types in my collection. 



Xepticula juglaxdifoliella Clemens. 



Xepticula juglaiidifolieUa Clemens, Proc. Ent. Soc. Phil., 

 I, 84, 1861; Tin. No. Am., 173, 1872; Chambers, Bull. Geol. 

 Surv. Terr., IV, 105, 1878; Dyar, List N. A. Lep., Xo. 6199, 

 1902. 



Syn. carycefoliella Clemens, Proc. Ent. Soc. Phil., I, 8-1, 

 1861 ; Tin. No. Am., 174, 1872 ; Dyar, List N. A. Lep., No. 

 6190, 1902. 



Chambers has accurately described this species, which 

 Clemens named juglandifolieUa from a knowledge of the 

 mine and larva only. Mines on hickory, similar to those de- 

 scribed by Clemens, to which he gave the name carycefoliella, 

 have yielded specimens differing in no respect from those bred 

 on walnut, and therefore carycefoliella Clem, must be regarded 

 as a synonym of juglandifolieUa Clem. 



As Chambers has noted under 

 his description oi N. juglandifolieUa, 

 several mines usually occur on a 

 leaflet of walnut, crossing and re- 

 crossing one another until it is 

 scarcely possible to trace the sepa- 

 rate mines. There may be as many 

 ^line of. v. jus:/aru/r/oM/n. ^g ^ ^^Q^eu uiiucs ou a siuglc leaflet. 

 I have not observed this peculiarity on hickory leaves ; there 

 is usually but one mine on a leaflet, rarely two or three may 

 be found together. The cocoon is small, brownish red and 

 somewhat flattened. 



