Dec. 1894. J NeUMCEGEN & DyAR. N. A. BoiMBYCES. 153 



Synopsis of species. 



Color rusty brown or gray. 



Primaries with white shades ...... americana. 



Wings largely or wholly gray ..... rac- califomica. 



Wings brown, without white shades. 



Sexes concolorous or nearly so ... . luir. ferruginea. 



5 more luteous than (^ ...... race roseata. 



Color contrasting- yellow and brown ...... dyari. 



P. americana Harris. 



1841 — Gastropacha americana Harris, Rep. Ins. Mass., p. 273. 

 1855 — Gastropacha occidentis Walker, Cat. Brit. Mus., Vol. VI, p. 1392. 

 1S68 — Lasiocaiiipa carpinifoiia BoiSDUVAL, Ann. Ent. Soc. Belg., Vol. XII, 

 p. S3. 



var. ferruginea Packard. 



\'&t\- Gastropacha ferruginea Packard, Proc. Ent. Soc. Phil., Vol. Ill, p. 386. 



race roseata Stretch. 



1S72 — Gastropacha roseata SxRETCii, Zyg. & Bomb. N. A., pi. 4, f. 12. 

 i?>-]2—Gastiopacha niildei Stretch, Zyg. & Bomb. N. A., p. 113. 



race californica Packard. 



1S72 — Gastropacha californica Packard, Rep. Peab. Acad., Vol. IV, p. 91. 



Ferruginous brown, frosted with white scales. T. a. and t. p. 

 lines slender, lunulate, blackish. A slight discal dot. S. t. line 

 reddish, bordered by a white shade. A mesial line and discal dot 

 on secondaries followed by a white shade and obscure sub-marginal 

 band. The race californica is gray, more or less tinged with brown. 

 Expanse, 27 — 35 mm. 



Habitat., Atlantic States to Canada and Pacific Northwest; of 

 race californica, Rocky Mountains to Southern California; of race 

 roseata., California. 



P. dyari Rivers. 



1893 — Pliyllodesma dyari Rivkks, Can. Ent., Vol. XXV, p. 144. 



(^ Pale yellowish ocher; outer part of fore wings rosy brown, 

 the color extending to the middle one of three lines of dusky spots 

 which cross the disc. A pale mesial band on hind wings. 9 Paler 

 than the cT with distinct emarginations between the terminations 

 of the venules. Expanse, 38 — 55 mm. 



Habitat., Western Texas, Mexico (?). 



Genus Heteropacha Harvey. 



1874 — Heteropacha Harvey, Bull. Buff. Soc, Vol I, p. 262. 



