we os. 
O. aToMARIA WIk. (Pl. IV, Figs. 5, 6; Pl. VI, Figs. 1, 2; Pl. VII, 
Fig. 2). 
Dasychira atomaria Walker, Cat. Lep. Het. Brit. Mus., VII, 1739 (1856) (92 
nec 2). 
Parorgyia achatina Packard (nec A. & S.) Proc. Ent. Soc. Phil., III 333 (1864). 
Parorgyia obliquata Grote & Robinson, Proc. Ent. Soc. Phil. VI, 4 Pl. 1, fig. 4. 
(1856). 
Parorgyia parallela Seifert (nec G. & R.) Ent. Amer. III, 96 (1887) (partim) ; 
Packard (nec G. & R.) 5th Rep. U. S. Ent. Comm. 135-6, figs. 42, 43, 
_ Pl. 35, fig. 3 (1890) (larva). 
Parorgyia achatina var. obliquata Dyar, Psyche VII, 136 (1804) (larva). 
Olene achatina var. tephra Neumoegen & Dyar (nec Hubner) Jour. N. Y. Ent. 
Soc. II, 57 (1894). 
Dasychira plagiata Beutenmuller (nec Walker) Bull. Am. Mus. N. Hist. IX, 210 
(1897) (partim). 
Olene achatina Beutenmuller (nec A. & S.) Bull. Am. Mus. N. Hist. X, 384 
(1898). 
Olene achatina var. tephra Dyar (nec Hbn.) Bull. 52, U. S. Nat. Mus., 260 
(1902). 
Olene obliquata Dyar, Proc. Ent. Soc. Wash., XIII, 16 (1911). 
With a colored figure and a photograph (Pl. VII, Fig. 2) of the 
type 2 of atomaria WIk. as well as a specimen compared for us by Sir. 
Geo. Hamson with type and a photograph of the two type 9’s of 
obliquata G. & R. (Pl. VI, Figs. 1, 2) before us, we have no hesitation 
in adopting the above synonymy. We also have received photographs 
of the ¢ and @ in the Harris Collection referred to by Packard as 
achatina (Proc. Ent. Soc. Phil. III, 333); the ¢ is the form parallela 
G. & R. and the @ is typical atomaria WIlk. 
The species occurs in two forms, with and without a black basal 
dash, as has been conclusively proved by the breeding experiments of 
Seifert. The form with black basal dash has been described as a 
good species by Grote and Robinson under the name parallela; it is 
sufficiently distinct to warrant a retention of the name. The ¢’s 
have been briefly described by Seifert, and figured by Packard under 
the name parallela. The early stages are described by Packard (his 
final stage is evidently erroneous) from ova from Newburgh, N. Y.; 
Dyar also gives notes on some of the larval stages and Seifert has 
worked out the life history in detail (Ent. Amer. III, 93) from larvae 
found in Green Co., Catskills, N. Y. 
