2 i J. [Octob*!-, 



Pupa — iii — iv, vi — vii. Cocoon distinct.* 



Imago — iv — v, vii — viii. 



Broods — two. Hibernates as full-fed larva inside the mine. 



Hab. — England, Yorkshire (Doncaster, B. H. Corhftt), Here- 

 fordshire (Tarrington, J. H. Wood), Kent {loc. var., B. A. Bower, 

 A. B. Farn). Central Europe. 



Imago — Fore-wings shining, rufous-orange in both sexes ; basal white streak very 

 long and slender, slightly wavy, not dark-margined, and very rarely uniting with first 

 dorsal tooth ; first dorsal and first costal white teeth particularly long, narrow, and 

 oblique, sometimes uniting to form an acutely angulated fascia. Costal and dorsal 

 teeth for the most part narrowly black-margined internally. Dorsal margin between 

 base and first tooth with a narrow white line or a white spot. A distinct slender 

 black streak at apex. Exp. al., 7.75 — 8.75 mm. Posterior tarsi white, unspotted. 



Easily distinguishable from all except spinicolella, Z., by the 

 length and narrowness of the white basal streak and of the white 

 teeth. Its rufous-orange colour separates it at once from spinicolella. 



I have treated mahalehella, Miihlig, which is bred from JPrunus 

 mahaleb on the continent, and is a little darker than cerasicolella, as 

 unquestionably a form of this species, because 1 have failed to find 

 auy specific distinctions between them. Frey and Snellen in their 

 later works, as well as Hering, have also treated the former as a 

 variety of the latter. 



ISteudel, noticing that several specimens, bred from Persica at 

 Stuttgart, had the palpi black-tipped, separated them (/. c.) under the 

 varietal name persicella. 



The Stainton continental collection contains several un-named 

 specimens bred from peach, viz., two from Ragonot, four from 

 Peyerimhoff, two from E. Hering, a few bred from apricot, viz., three 

 from Schmid, two from E. Hering, and two- bred by Fritzsche from 

 Pyrus communis, labelled '^ Pyri, Fritzsche:" all these, together with 

 nine specimens in the Frey collection, labelled by Frey as " L. spec, 

 dubia'' of which seven were bred from peach and two from mirabel 

 plum (" mirabellen "), are, in my opinion, cerasicolella. The hitherto 

 unidentified Lithocolletis reared by Machin from '' a species of wild 

 plum " (Entom., xiii, 165) is also cerasicolella, as shown by an ex- 

 amination of the specimens bred by him. 



2. — Lithocolletis spinicolella, Z. 

 LitJiocolletis spinicolella, Z., L. E., i, 203—4, Anm. 1 (1S4G) ; 



• Authors, both British aud continental, are in the habit of speaking of some of these 

 species of LilhocolUtis as making cocoons, and others as making no cocoons. Dr. Wood, however, 

 points out to me that this is not strictly accurate, for all really spin cocoons inside their mines, 

 though some make a distinct, and others a very indistinct, cocoun. 



