208 PROCEEDINGS OF THE ACADEMY OF 



reddish-saffron, with a slight brassy hue. Along the costa are five silvery white, 

 costal streaks, all black margined internally except the first, which is very 

 oblique and continued along the costa to the base of the wing. All the costal 

 streaks are short, except the first. On the inner margin are two conspicuous 

 silvery dorsal streaks, dark margined internally, the first, very large, and placed 

 near the middle of the inner margin, the second opposite the third costal 

 streak. At the tip is a small, round black spot, placed above the middle of 

 the wing ; cilia silvery gray, tinted with saffron. Hind wings grayish-fuscous, 

 cilia paler. 



The specific name used by Dr. Fitch being already in use to designate a 

 European species of this genus, it was necessary to change it. I feel pleasure, 

 therefore, in dedicating it to the industrious observer who first described it, 

 and who is adding so much to our knowledge of entomological Natural His- 

 tory. 



L. tubiferella . Head silvery white. Antenna? fuscous, slightly annu- 

 lated with white ; basal joint pale saffron. Fore wings pale saffron, with two 

 silvery white, moderately broad bands, black margined externally, one near 

 the base and the other on the middle of the wing, and both somewhat oblique ; 

 cilia of the general hue. Hind wings dark grayish, cilia the same. 



The larva belongs to the second larval group of this genus, but the body 

 much more contracted than that of any other larva I have seen. Its form is 

 almost that of a flattened ovoid, the rings separated by deep incisions, and each 

 forming in the sides a projecting mammilla. 



The larva mines the upper surface of the leaves of oaks in September, and 

 doubtless also in the summer months. The mine is a linear tract, sometimes 

 curved or wavy, gradually increasing in breadth from the beginning to the 

 end, or as the larva increases in length, with the "frass" deposited on each 

 side of the tract and marking its outlines by two black lines. The position 

 of the larva within the mine is likewise a peculiar one, as it is always placed 

 transversely to its course, and hence the deposition of the "frass" on the 

 sides, and the gradual increase in breadth as the larva grows in length. Its 

 head is blackish brown ; the body pale greenish, with pale brown dorsal ma- 

 cula?, darker on their edges. It undergoes transformation in the end of the 

 mine, preparing a circular cell or slightly silk-lined cavity, and leaves the 

 last larval cast outside of it. The fall brood of larva become imagos about 

 the middle of May. 



L. cratfegella . This insect is found on the apple and wild cherry, (P. 

 serotina), without undergoing any variation, which I can detect. I thought 

 beyond doubt, that that in the leaf of wild cherry, must be a distinct species, 

 for the larva has a habit unusual to larvse of this group, and which I have not 

 noticed in those on the thorn and apple, although, doubtless, they correspond. 

 The habit I refer to in wild cherry miners, consists in deserting an old mine to 

 form a new one, reminding one strongly of the early habits of the Ornix larv. 

 The larva enters along the midrib to form a new mine, which I have found in 

 various stages of advancement, besides the old and tenantless mine in another 

 portion of the leaf. 



Tischeria. (See Paper No. 2.) 



T. malifoliella. Head and antennae shining dark brown ; face ochre- 

 ous. Fore wings uniform, shining dark brown with a purplish tinge, slightly 

 dusted with pale ochreous ; cilia of the general hue. Hind wings dark gray : 

 cilia with a rufous tinge. 



The larva mines the upper surface of the apple leaf. The mine is flat, at 

 least until the larva enters the pupa state, and begins as a slender white line, 

 dilating as it increases, and is ultimately formed into an irregular brownish 

 colored patch, which is sometimes extended over the beginning. This is then 

 shown on the separated epidermis as a white line or streak. The head of the 



[June, 



