Drury correctly considered this species as distinct from the Linnæan Hyparete, and accordingly named it Eucharis. Fabricius, notwithstanding, united the two species, and applied the name Eucharis to another Indian species (Anthocaris Eucharis of Boisduval, but which it would be more correct to name Aurora after Cramer). Godart, in order to obviate the confusion arising from two distinct species having the same specific name, altered the oldest name (Eucharis, Drury), instead of the incorrectly imposed name of Fabricius. I have therefore reverted to the name proposed by Drury, the other species being now removed to the genus Anthocaris. PLATE XI. [Illustration] SATURNIA PROMETHEA. Plate XI. fig. 1, 2. [male].--Plate XII. fig. 1, 2. [female]. ORDER: Lepidoptera. SECTION: Nocturna. FAMILY: Bombycidæ, _Steph._ GENUS. SATURNIA, _Schrank._ Attacus, _Germar._ Phalæna (Attacus), _Linn._ SATURNIA PROMETHEA. Alis subfalcatis, maris fuscis, foeminæ ferrugineis, fasciâ tenui undatâ communi pallidâ margine griseo, anticis utrinque ocello atro. (Expans. Alar. 4 unc. [male]. 4 unc. 3 lin. [female].) SYN. Phalæna (Attacus) Promethea, _Drury, App. vol._ 2. _Fabr. Ent. Syst._ III. 1. 411. _No._ 12. _Gmel. Linn. S. N._ 2403. 464. _Cram. Ins. tab._ 75. A. B. [male]. 76. A. B. [female]. _Abbot & Smith Ins. Georgia_, 1. _tab._ 46. _Oliv. Enc. Méth._ 5. 27. 12. _Pal. Bauv. Ins. d'Afr. et d'Amer. Lep. pl._ 21. HABITAT: New York, Virginia, Georgia. MALE.--_Upper Side._ Antennæ strongly pectinated, dark brown. Head, thorax, and abdomen the same. Anterior wings very dark chocolate, hooked at the tips; having a margin of light hair colour running along the external edges from the tips to the lower corners, through the middle of which runs a narrow black serpentine line like a hair, dividing the margin into two shades, the external one being darkest; near the tips is a black spot like an eye, partly surrounded by a blue iris; a narrow waved line of a light hair colour begins at the anterior edge, about one-third from the tips, and, crossing both the anterior and posterior wings, ends about half an inch below the body. Posterior wings of the same colour as the anterior, having a hair-coloured margin running round them; being also divided in the middle by a waved narrow line, above which are several dark-coloured spots and marks.