JUNE, 1860. 149 



it enters the pupa state and forms its cocoon, by turning 

 clown a portion of a leaf, carpeting it with silk and binding 

 its edges closely. The opening left at the end, correspond- 

 ing to the tail of the pupa, is closed densely, and the other 

 with loose silken threads. The pupa-case is very dark 

 reddish-brown, and it remains in situ when the imago escapes. 

 The antennae-cases as long as the wing-cases ; abdomen 

 rather short and blunt ; cylindrico-conical. The imago 

 appears during the latter part of September. 



Psilocorsis. 



The neuration of the wings differs in scarcely any respect 

 from the foregoing genus, except that the medio-posterior 

 vein is not remote from the penultimate. The posterior veins 

 of the median are very much curved. The structure of the 

 fore-wings in both these groups is much like that in the 

 Tortrices. 



Head smooth. Face rounded. Ocelli none. Eyes large, 

 round and salient. Labial palpi long, remote from the face, 

 recurved, rather slender ; second joint rather flattened, smooth, 

 icith oppressed scales ; third smooth, slender and pointed, 

 nearly as long as the second joint. Maxillary palpi short, 

 distinct. Antennae about one-half as long as the fore-wings, 

 simple and filiform ; basal joint rather long and subclavate. 

 Tongue one-half as long as the thorax beneath, scaled. 



(jl%Mi°P. quercicella. Head and thorax dark yellowish-brown. 

 ^ Labial palpi, second joint ochreous, with a black line on the 

 edge beneath ; third black, with two yellowish-white stripes 

 in front. Antennas ochreous, with a black line above, termi- 

 nating in black spots ; basal joint with two black stripes in 

 front. Fore-wings yellowish-brown, varied with blackish 

 irregular striae, chiefly from the costa, with a black dot on 

 the end of the disk. The posterior margin is tipped with 

 blackish ; the cilia are yellowish-brown, containing two dark- 

 fuscous kinder-marginal lines. 



