1864.] 125 



Estigmene acria Hiibn., Samml. Exot. Schin. Bd. 2, pi. 191, no loc. (1806). 



Verz. p. 184. (1816). 

 pseudermia Peck, Mass. Ag. Rej). and Journ. 

 Arctia p sender minea Harr., Mass. Ag. Rep. and Journ. p. 322. PI. 1. (1823). 

 Arctia acria Harr., Cat. Ins. Mass. (Hitchcock's Rt. p. 591). (1833). 



Rt. Ins. Mass. p. 251. (1841). Third ed. PI. 6, fig. 9 -^ , 10 J . 

 Fig. 169, larva. 

 Spilosoma acrea Westw., Ed. Drury. 



Walk., Cat. Lep. B. M. III. p. 667. (1855). 



Clem., Proc. Acad. Nat. Sci. Phil. p. 531. (Nov. 1860). 



Morris, Synopsis Lep. N. Amer. Appendix, p. 342. (1860). 



Leucarctia californica n. sp. 



9 . White. Primaries with five distinct black costal dots, and a 

 mesial, submarginal and marginal row of black dots, those on the outer 

 margin the most distinct. Secondaries white; a discal dot, another 

 one near the internal angle, and a marginal row of minute dots, obso- 

 lete on the internal angle. On the under side of the fore wings the 

 costal dot, the apical half of the submarginal row and the marginal are 

 present. All the dots appear on the under side of the secondaries. 

 Fore coxge yellow, black within, xibdomen deep buff yellow, with a 

 dorsal and subventral row of black dots. 



Length of body, .88. Exp. wings, 2.40 inches. 

 San Francisco, Cal. (Mus. Comp. Zool. A. Agassiz). 

 The single specimen described above was imperfect, wanting the 

 head. 



SPILOSOMA Stephens. 

 Spilosoma virginica Walker. 

 Bomhyx virginica Fabr. 

 Arctia virginica Harr., Cat. Ins. Mass. (Hitchcock's Rt. p. 591). (1833). 



Rt. Ins. Mass. p. 248. (1841). .3rd ed. fig. 168,167, larva. (1862). 

 Spilosoma virginica Walk., Cat. Lejj. B. M. III. p. 668. (1855). 

 Fitch, Third Rt. Ins. N. Y. (1856). 

 Clem., Proc. Acad. Nat. Sci. Phil. p. 531. (Nov. 1860). 

 Morris, Synopsis Lep. N. Amer. Appendix, p. 342. (1860). 

 Saunders, Synopsis Can. Lej). p. 14. (1863). 

 Desideratum. 

 Spilosoma congrua Walk., Cat. Lej). B. M. p. 669. 

 "G-eorgia." 



Spilosoma vestalis n. sp. 



9 . Pure white. Antennae, thorax and wings white. Palpi brown. 

 A minute brown dot near the base of the median, and a similar one 



