50 Journal Nf.w York Entomological Society. [Voi. ix 



Cerostoma arizonella, sp. nov. 



Antennje dark brown. Labial palpi on the inside light brown, on the outside 

 strongly mottled with blackish scales ; tuft on second joint small, terminal joint thickened 

 with rough scales anteriorly. Head and thorax light ochreous brown. Ground color 

 of forewings rather light brown, but thickly overlaid on the costal three fourths with 

 deep brown and dark purple scales so as to obscure the ground color except along 

 the dorsal edge. The fold is indicated by being rather more profusely overlaid with 

 dark purple scales and at the end of the cell is a small aggregation of closely placed 

 dark purple scales, hardly forming a defined dot. Irregularly scattered over the wing 

 both in the dark portion and in the light dorsal part are a few single black scales and 

 still fewer single white scales. Cilia light brown. Hindwing silvery fuscous ; cilia 

 a shade darker than the edge of the wing. Legs dark purplish fuscous, tarsi with a 

 narrow white annulation at the end of each joint. Alar expanse, 22 mm. 



Habitat: Williams; Arizona (Schwarz and Barber). 

 U. S. National Museum, type No. 6753. 



Cerostoma radiatella Donovan. 



Sinea radiatella DoNOVAN, Nat. Hist. Brit. Ins., HI, p. 14, pi. 77, figs. 3 and 

 4, 1794. 



Cerostoma radiatella Rei'.el, Staudinger and Rebel, Cat. Lep. Eur., H, No. 

 2466, 1 90 1. 



Pluteloptera ochrella Chambers, Journ. Cinn. Soc. Nat. Hist., II, p. iSl, 

 1880. 



Cerastoma radiatella Walsingham, Proc. Zool. .Soc. Lond. , p. 303, 18S1. 



Cerostoma radiatella Walsingham, Ins. Life, I, p. 287, 1889. 



Cerostoma radiatella RiLEY, Smith's List Lep. Bor. Am., No. 5193, 1S91. 



Cerostoma radiatella Dyar, Can. Ent. , XXXII, p. 41, I900. 



Cerostoma radiatella Dyar, U. S. Nat. Mus., Bull. 52, No. 5500, 1903. 



Lord Walsingham recorded this exceedingly variable species from 

 California and established the synonymy of Chambers' Pluteloptera 

 ochrella. 



In U. S. National Museum are specimens from Williams, Arizona 

 ( Schwarz and Barber ), which I cannot distinguish from some varie- 

 ties of this species, a good European series of which is also in the 

 Museum. 



They have the peculiarity, mentioned by Meyrick, of the thickened 

 area between veins 11 and 12 in the forewings. 



Cerostoma rubrella Dyar. 



Cerostoma rubrella Dyar, Proc. U. S. Nat. Mus., XXV, p. 404, 1902. 

 Cerostoma rubrella Dyar, Bull. U. S. Nat. Mus., 52, No. 5501, 1903. 



The type ( U. S. Nat. Museum, No. 6763 ) and a good bred series 

 of this species is in the National Museum. 



