CALLOSAMIA. 93 



to utilise the silk of this or the other North American 

 Saturniidcz commercially. Abbot calls it rare in Georgia ; but, 

 as a dealer, he indicated almost every insect as being " rare." 



GENUS CALLOSAMIA. 



Callosaniia, Packard, Proc. Ent. Soc. Philad., iii., p. 379 (1864). 



This is another genus which includes only a few species, 

 which are confined to North America. It is allied to Samia, 

 but the head is narrower and less hairy, the body is much 

 more slender, and much shorter than the hind-wings, and the 

 antennas, though broadly pectinated, are rather short. The 

 wings have a curved or angulated mark in the middle, at least 

 on the under side, the fore-wings are not much longer than 

 broad^ and are sub-falcate in the male, the hind margin being 

 deeply concave below the tip, and the hind-wings form a long 

 oval, being much longer than broad. 



CALLOSAMIA PROMETHEA. 

 {F/ate CXVII.) 



Attaciis projnethca^ Drury, 111. Exot. Ent. ii., pi. 11, figs, i, 2 ; 



pi. 12, figs. 1,2 (1773); Cramer, Pap. Exot., i., pi. 75, 



figs. A, B; pi. 76, figs. A, B (1775); Abbot and Smith, 



Lepid. Georg., i., pi. 46 (1797). 

 Saturnia promethea^ Peale, Lepid. Amer., pis. 3, 4 (1833). 

 Hyalophora promethea^ Duncan in Jardine's Nat, Libr., Exot. 



Moths, p. 134, pi. 12 (1841). 



This is another handsome and fairly common North 

 American moth, which expands about four inches across the 

 wings. The male is dark chocolate-colour, with the outer 

 third of the wings lighter, and bordered within by a more or 

 less distinct whitish line. The fore-wings are hooked. The 



