90 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Royal Museum in Copenhagen, which I had opportunity to 

 study last year ; there are found in their original order only six 

 species under the genus Ypsolophus and all of these belong to 

 Cerostoma. 



Dichomeris delotella, new species. 



Second joint of labial palpi with the well-developed, pointed tuft 

 blackish brown exteriorly, ochreous fuscous on the inner side and with 

 the apical edge whitish ; terminal joint ochreous fuscous with black 

 tip. Antennae light ochreous with narrow black annulations. Head 

 and thorax ochreous brown, sprinkled with fuscous. Fore-wings light 

 ochreous brown, sprinkled with dark brown and black scales. There is 

 a prominent, large, blackish-brown, triangular, dorsal dash at basal 

 fourth, reaching oblilquely outwards more than half way across the 

 wing ; on the costal edge is a series of small blackish-brown dots, sep- 

 arated by light ochreous spaces ; on the end of the cell is a small, indis- 

 tinct, blackish-brown spot, edged by a few white scales ; apical fourth of 

 the wing is heavily overlaid with blackish brown, rather sharply limited 

 from the lighter basal part of the wing; the extreme edge around apex 

 is light ochreous with ill-defined blackish-brown marginal dashes. Hind- 

 wings ochreous fuscous. Cilia a shade lighter. Abdomen dark fuscous. 

 Legs blackish fuscous, with the tips of the tarsal joints and the tuft on 

 posterior tibiae ochreous. 



Alar expanse : 14 to 15 mm. 



Habitat Baboquivari Mountains, Santa Rita Mountains, 

 and Hot Springs, Arizona (E. A. Schwarz), May June. 



Type U. S. National Museum No. 12265. 



Most nearly related to Dichomeris eupatoriella Chambers, 

 from which the pattern easily distinguishes it. 



Dichomeris georgiella Walker. 



Depressaria georgiella Walker, Cat. Lep. Het. Br. Mus., xxxv, 



p. 1827, 1866. 

 Trichotaphe georgiella Walsingham, Proc. Zool. Soc. London, 



p. 312, 1891; Busck, Proc. U. S. N. M. xxiv, p. 731, 1902; 



Busck, 1. c., xxv, p. 916, 1903; Dyar, List N. Am. Lep., No. 



5672, 1903. 

 Ypsolophus roseocostcllus Walsingham, Trans. Am. Ent. Soc. 



Phil., x, p. 185, 1882; Busck, Proc. U. S. N. M., xxv, p. 916, 



1903; Dyar, List N. Am. Lep., No. 5689, 1903. 



As stated in my "Revision of the North American 

 Gelechiidse," 1903, Walker's georgiella was unknown to me at 

 that time and was left in the genus Trichotaplic, where it had 

 been placed by Lord Walsingham, though it was obvious from 

 Walker's description of the labial palpi that it could not be a 

 typical Trichotaphe. 



