208 THE CANADIAN ENTOMOLOGIST. 



It is a little larger than either of the preceding species having an 

 alar ex. of fully y± in. It is glistening snowy-white, with a pale golden 

 basal streak from the base of the costa above the fold, and which unites at 

 a somewhat acute angle with the first costal streak. The wing is more 

 golden than the preceding species, and the streaks are rather wider apart. 



It is not very common in Kentucky, although its food plant is abun- 

 dant ; and it is rather difficult to rear in confinement, probably because 

 the leaves dry so rapidly. 



There is another species, the imago of which is unknown. The larvci 

 mines the leaves of an unknown weed, growing in small tufts like a plan- 

 tain, the leaves of which are deeply lobate, occurring abundantly all 

 through the Gulf states, especially in damp woods. The larva is very 

 abundant, and its anal segment very long. Mine, like that of P. vitifoliella. 



TISCHERTA. 



This genus differs from Lithocottetis in the much plainer colours of the 

 imago, and much shorter antennae, which in the males are ciliated. The 

 maxillary palpi also are developed, though small and scarcely perceptible ; 

 and in this respect, as well as in the position of the imago in repose — 

 with the head elevated, and the apex of the wings touching the surface 

 upon which the insect rests — it makes an approach to Gracittaria. 



The larvae are very cleanly, always depositing the frass outside of the 

 mine ; and the mines are always upon the upper side of the leaves, fre- 

 quently at the edge, and resembling the mines of some Graciilarim. It 

 pupates in the mine. 



i. Tischeria malifoliella, Clem. P7vc. Acad. Nat. Sri. P/iila., i860, p. 

 208. 



A plain bronzy-brown insect, having an alar ex. of a little more than 

 y^ inch. Dr. Clemens found it in apple leaves, and I have also bred it 

 from leaves of different species of Haw (Crataegus), Sweet Scented Crab 

 (Pyrus coronaria), Blackberry (Rubus villosus), and Raspberry (R. occi- 

 dentalis). And it probably mines other species of Rosacea?. 



Dr. Clemens also very briefly characterizes the following species, in the 

 Proc. Acad. Nat. Sci. P/ii/a., i8jg,p. 326, viz.: — 



T. solidagonifolieUa, mining leaves of Solidago, which I have never met 

 with. 



T. ZeUeriella and T. citrinipenella^ both of which feed within Oak 

 leaves. 



T. quercilei/a, Proc. Ent. Soc, Phila., v. 2, p. 73, which also mines Oak 

 leaves. 



