LEPIDOPTERA HETEROCERA. 1371 



pectinated, merely serrated for more than one-third of the length 

 from the tips, moderately pectinated to the tips in some species. 

 Female. — Antennas simple. 



North America. 



A. Alae flavae rufo variae. - imperialis, Drury. 



B. Alae rufescentes flavo variae. - Laocoon, Cram. 



1. EACLES IMPERIALIS. 



Alee fiavce, fusco irroratce et variegate, quatuor infra macula dis- 

 cali subocellari fusca. 



Ceratocampa imperialis, Westw. Drury, i. 17, pi. 9, f. 1, 2. 

 Phalaena (Attacus) imperialis, Drury, Ins. i. 17, pi. 9, f. 1, 2. App. 



v. 2. Stoll, Suppl. Cram. Pap. Exot. v. 178, pi. 42, f. 1 . 

 Bombyx imperialis, Fabr. Sp. Ins. ii. 181, 62; Mant. Ins. ii. 116, 



79; Ent. Si/st. iii. 1, 435, 89. Gmel. ed. Syst. Nat. i. 5, 



2417,510. 

 Phalaena imperatoria, Abbot and Smith, Nat. Hist. hep. Ins. Geory. 



pi. 55. Oliv. Enc. Meth. v. 56, 116. 

 Bombyx Didyma, Pal. Beauv. Ins. Lep. pi. 20. 

 Eacles imperatoria, Hiibn, Vers. Schmett. (Phalamce Sphingoides 



Echidna? Communiformes), 153, 1602. 



New York. 



Male and female. Yellow. Antennae tawny. Thorax with 

 two broad reddish partly interrupted stripes, which are connected by 

 a band in the middle. Abdomen not extending beyond the hind 

 wings, with almost confluent reddish bands. Wings with very nu- 

 merous minute reddish dots, with two reddish bands, and with a red- 

 dish discal spot, whose disk is whitish; firsthand deeply angular; 

 second very oblique. Fore wings with another spot like the discal 

 one, to the front of which it is contiguous ; second inferior vein 

 about four times further from the third than from the first. Male* 

 — Wings mostly reddish at the base. Fore wings reddish along the 

 exterior border. Exterior band of the hind wiugs very near the dis- 

 cal spot. Female. — Exterior band of the hind wings touching the 

 jdiscal spot. 



a, b. Georgia. From Mr. Milne's collection. 



3f3 



