SAM I A. 91 



List Lcpid. Ins. Brit. INTus., v., p. 1222 (1855); Packard, 

 Proc. Ent. Soc. Philad., ii., p. 380 ([863). 

 Platysamia, Grote, Proc. Ent. Soc. Philad., v., p. 229 (1865). 



Body stout and short, not more than half as long as the 

 hind-wings ; antennae long, strongly pectinated ; head small ; 

 face nearly covered with drooping hair ; wings with a curved 

 ocellus in the centre of each ; fore-wings considerably longer 

 than broad, and rounded at the extremity ; hind margin 

 oblique, hardly concave; hind-wings rounded, hardly longer 

 than broad. 



This genus is confined to North America, and the com- 

 monest species, which we have figured, is found in the United 

 States and Canada. It is the largest species of the Saturniidce 

 which inhabit temperate North America. 



SAMIA CECROPIA. 

 {Plate CXVI.) 



Bomhyx acropia, Linnaeus, Syst. Nat. (ed. x.), i., p. 447, no. 3 

 (1758); id., Mus. Ludov. Ulricce, p. 368 (1764); Clerck, 

 Icones, pi. 49, fig. I (1764); Hiibncr, Eur. Schmett., iii., 

 fig. 282 (1818). 



Attacus cecropia, Drury, 111. Exot. Ent, i., pi. 18, fig. 2 (1773); 

 Cramer, Pap. Exot., i., pi. 42, figs. A, B (1775); Abbot 

 and Smith, Lepid. Georgia, i., pi. 45 (1797). 



Hyalophora cecropia, Duncan in Jardine's Nat. Libr., Exot. 

 Moths, p. 132, pi. II (1841). 



This fine insect is one of the largest North American 

 moths, measuring upwards of six inches between the tips of 

 the wings. 



The antennae are black, broadly pectinated ; the head small 

 and red ; the collar white ; the thorax covered with long 



