Dec, I9I2.] Grossbeck: North American Geometrid.e. 287 



In 1883^ Hulst described Tephrosia fautaria from California and 

 in 1896* another species, Anthelia taylorata, from specimens taken 

 at Victoria, British Columbia. Incidentally, in this same paper he 

 refers Packard's iiigroseriata (which it appears he had misidenti- 

 fied)^ to the genus Deilinea and his own species, fautaria, to a new 

 genus erected for its reception, Thallophaga. Anthelia likewise is 

 created for his species, taylorata. StilLlater in 1900^ Hulst described 

 Tetrads hypcrborea from Virgin Bay, Alaska. 



Hence four names are involved which I would apply to two very 

 distinct though congeneric species. 



One species expands about 35 mm., the outer row of dots, when 

 present, is evenly rounded to below costa and then straight to inner 

 margin, and occurs, as far as our records show, along the Pacific 

 Coast from Vancouver Island northward to Alaska. The other is 

 smaller, expanding not more than 28 mm., and has the outer row of 

 dots (which latter are usually connected by a narrow shade line) 

 more or less defined, extending in pronounced waves to the inner 

 margin. It has not been recorded outside of California from where 

 (Monterey Co.) I have received a series of no less than thirty 

 specimens. 



Dyar^ has already referred Thallophaga fautaria, the smaller form, 

 to Anthelia nigroseriata but the fact that in the same note he refers 

 Tetrads hyperborea, of which he has the type, to the same species, 

 which he says Packard figures well, indicates that he regarded Pack- 

 ard's name as applying to the large more northern form. His refer- 

 ence of fautaria to this form therefore is an error, for while fautaria 

 does equal nigroseriata Pack., Proc. Bost. Soc. Nat. Hist., it does not 

 equal nigroseriata Pack., Monogr. Geom. Moths. 



The form described by Packard in the monograph will take the 

 name Anthelia taylorata Hulst with Tetrachis hyperborea Hulst as a 

 synonym, the genus Anthelia of Hulst being well founded. 



The synonymy will stand thus : 



^ Entomologica America, Vol. Ill, p. 216. 



* Trans. Am. Ent. Soc, Vol. XXIII, p. 337. 



^ Dyar, Proc. Ent. Soc. Wash., Vol. VI, p. 225, 1904. 



"Proc. Wash. Acad. Sciences, Vol. II, p. 496. 



