926 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



I have not recognized this species, which, as Fitch himself surmised, 

 very likely is only one of the many varieties of ligulellus. 



There is in the U. S. National Museum, under type No. 469, a spec- 

 imen (one forewing only!) recorded as collected by and received from 

 Fitch as type of malifoUella and bearing a label presumably in Fitch's 

 writing, '"'' Dej)ressaria malifol'uUa.'''' 



This forewing can not be made to agree with Fitch's description of 

 Ypsolophus malifoUelhi.s^ and is probably the type of one of Fitch's many 

 manuscript species. It is a wing of Macliimia tentoriferella Clemens 

 and has no connection with the present species. 



YPSOLOPHUS QUERCIELLUS Chambers. 



Ypsoloplins quercieUa ChaiMbers, Can. Ent., IV, 1872, p. 223; Bull. U. S. Geol. 

 Surv., IV, 1878, p. 83; Journ. Cinn. Soc. Nat. Hist., II, 1880, p. 202, fig. 16.— 

 Walsingham, Trans. Am. Ent. Soc. Phila., X, 1882, p. 186. 



Yjmilophus ijn.rcireUa Chambers, Bull. U. S. Geol. Surv., IV, 1878, p. 167. 



Yps(,lni,lnis<j,i, rrlr.'llii.'i RiLEY, Smith's List Lep. Bor. Am., No. 5529, 1891. 



Ypsulojihuti quercidliij' Busck, Dyar's List Amer. Lep., No. 5688, 1902. 



The type of the species was lost and no authentic specimen is now 

 in existence. Chambers suggested that it probably rather should ])e 

 placed under Deprcmiria^ but his delineation of the venation shows, 

 if it can be relied upon, that it can not be a Depressaria^ and provi- 

 sionally, at least, it must be retained in Ypsolopfms. 



From the fact that it was bred from oak, and that a description, 

 even if meager, was given of the larva, there is some hope of redis- 

 covering the species in time. 



Habitat. — Kentucky. 



YPSOLOPHUS ROSEOCOSTELLUS "Walsingham. 



Ypsolophus roseocostellus Walsingham, Trans. Am. Ent. Soc. Phila., X, 1882, 

 p. 185.— Riley, Smith's List Lep. Bor. Am., No. 5530, 1891.— Busck, Dyar's 

 List Amer. Lap., No. 5689, 1902. 



I am not acquainted with this species, which for some reason I 

 failed to get notes on while in Amherst, where the type is found in 

 Professor Fernald's collection. 



In the U. S. National Museum is a specimen labeled in Walsingham's 

 handwriting Y. roseocostellus., but there must be some mistake, as it 

 does not agree with his description, and belongs to Ypsolophus ven- 

 trell'us Fitch, a much larger and more broad-winged species. 



YPSOLOPHUS BIMACULELLUS Chambers. 



Noihris himamldla Chambers, Bull. U. S. Geol. Surv., Ill, 1877, p. 122; Journ. 



Cinn. Soc. Nat. Hist., II, 1880, p. 184.— Riley, Smith's List Lep. Bor. Am., 



No. 5535, 1891. 

 Ypsolophus himaculellus Busck, Dyar's List Amer, Lep., No. 5690, 1902. 



