190 ENTOMOLOGICAL SOCIETY 



parallel, both being oblique, with dorsal ends nearer the base of 

 the wing than the costal. These fasciae are besides in this variety 

 slightly angulated outwardly at their upper third, especially the 

 one nearest the base of the wing. I have bred unlimited numbers 

 of this species from poison ivy around Washington, D. C., and 

 have every intermediate form between the two extremes, and 

 there is no doubt that the two names stand for the same species. 

 Clemens' name will hold. 



Chambers made his Lithocolletis cesculisella* a synonym of 

 guttifinitella, but Lord Walsingham doubted this, considering it 

 exceedingly improbable. The name should be retained as a sepa 

 rate species. 



Lithocolletis crataegella Clemens. 



One type, unspread, but perfect, Clemens' No. 26, ; alar exp., 

 6.5 mm. 



This type proves Lord Walsingham's assertionf that Clemens' 

 species is the same as the common European apple-feeder, Litho 

 colletis pomifoliella Zeller, now known under the name Litho 

 colletis blancardella Fabricius. Lord Walsingham placed Lith 

 ocolletis deceptusella Chambers as a synonym of this species.J 



Lithocolletis hamadryadella Clemens. 



One perfect type, Clemens' No. 27; alar exp., 6.5 mm. A 

 pin with the number 2J-F has evidently borne his variation F, 

 but the specimen is destroyed. 



This type represents our well known, most common Litho 

 colletis on oak, described later by Zeller as alternatella.^ A 

 bred series compared with Clemens' type is in the U. S. National 

 Museum. 



Lithocolletis argentinotella Clemens. 



Two types, the one perfect, the other without fore wings, 

 Clemens' No. 28 ; alar exp., 6.5 mm. 



Specimens bred from underside mines on elm and compared 

 with Clemens' type are in the U. S. National Museum. 



Tisheria solidagonifoliella Clemens. 



The type of this species with Clemens' No. 29 is lost. The 

 species, however, is well known from Clemens' description and 

 the knowledge of its food plant. 



Bred specimens, agreeing with description and undoubtedly 

 representing the species, are in the U. S. National Museum. 

 Alar exp., 7 mm. 



* Printed cescnlella in Riley's List by mistake. 



f Trans. Am. Ent. Soc., x, p. 202, 1882. 



J Ins. Life, iii, p. 328, 1891. 



Wrongly quoted by Chambers, in his Index, as alternata. 



