March 1894.] NeUM'EGEN & DVAR. N. A. BOMBYCES. 15 



Thorax normal, or more often collar immaculate. Abdomen 

 ocher yellow with dorsal and lateral black bands widest centrally. 

 Fore wings black, a stripe near costa and longitudinal band present ; 

 transverse posterior line and terminal w-mark also present, the 

 former bent at right angles and usually its lower limb fused with 

 the line on median vein. It does not extend below the longitudinal 

 stripe. Markings often become obsolete from without inwards, 

 the w-mark disappearing first. Secondaries pale ocher, rarely 

 partly pinkish with double marginal row and one discal spot. 

 Expanse, 25 — 30 mm. 



Habitat, Atlantic States westward. 



E. phalerata Harris, 



1841 — Arctia phalerata Harris, Ins. Mass., p. 274. 

 18S1 — Arctia rhoda Buti.kk, Ent. Mo. Mag., Vol. XVIII. p. 1-56, 

 \'i,%\— Arctia iitcovtpleta BuTLER, Ann. Mag. N. H. (5), Vol. VIII. p. 311. 

 Thorax normal, abdomen red. rarely yellow, marked like nais. 

 Fore wings as in nais except that the costal stripe reaches the 

 costa and the w-mark is only very rarely at all incomplete. 

 Secondaries pink in J^, especially along abdominal border, rarely 

 entirely ocherous ; red in 9 ; the black marks as in nais, but some- 

 times very small or absent. 



Habitat, Atlantic States westward. 



E. vittata Fabricius. 



1787 — Bomhyx vittata Fabricius, Mant. Ins., Vol. II, p. 127. 



1855 — Apantesis radians Walker, Cat. Brit. Miis., pt. Ill, p. 632. 



1862 — Arctia decorata Saunders, Proc. Ent. Soc. Phil., Vol. II, p. 60. 



1864 — Aloa colorata Walker, Cat. Brit. Mus.. pt. XXXI, p. 301. 



Marked like nais except that the costal band reaches the costa. 



The black abdominal bands are broad and frequently cover most 



of the abdomen. Hind wings ocher or red, the spots as in nais 



but often form a complete broad black border. Expanse, 30 — 



35 rnrn- 



Habitat, Atlantic States. 



Genus Kodiosoma Stretch. "^ 



1872 — Kodiosoma Stretch. Zyg. and Bomb. N. A., Vol. I, p. 67. 



Synopsis of species. 

 Secondaries black. 



Abdomen yellow at tip ........ . nigra. 



Abdomen black throughout ....... eavesii. 



Secondaries red at base ......... tricolor. 



Secondaries yellow at base ........ fulva. t^ "'^'^ 



1) t 



