SVSSISPHINX. 79 



Imago. -Of large or moderate size, and bright colours, yellow 

 and red usually predominating ; body stout, and pilose, as 

 long, or longer, than the hind-wings ; proboscis and palpi 

 small ; antenn;e of the males strongly bi-pectinated to the 

 middle, and simple towards the tip ; those of the female 

 filiform ; wings long, moderately broad, entire, only slightly 

 ocellated, if at all ; frenulum absent ; hind-wings with two 

 sub-median nervures. 



This is an exclusively American family of small extent, but 

 including several very large and handsome species. Those 

 found in North America are, with the exception of the 

 Sphingidce and Saturuiidcp., the most beautiful and conspicuous 

 moths in the country. 



GENUS SYSSLSPHTNX. 



Syssi'sphifhx, Hiibner, Verz. bek. Schmett., p. 143 (1822 ?) ; 

 Walker, List Lepid. Ins. Brit. Mus., vi., p. 1503 (1855). 



This genus includes only one species, which is found in 

 Mexico and South America. The antennce are short, and 

 very strongly pectinated to the middle in the male, and 

 serrated beyond ; in the female they are simple. The palpi 

 are very short. The fore-wings are long, rather narrow, 

 slightly pointed at the tips, and oblique, and in the male 

 slightly angulated along the hind margin. 



SYSSISPHINX MOLINA. 



{Plafe CXI/L, Fig. i ; larva, Fig. 2.) 



Bomhyx molina, Cramer & Stoll, Pap. Exot., iv., pi. 302, 

 figs. E, F (17S1?); iv., pi. 396, fig. B (1782); v., pi. 22, 

 figs. 4, 4D (1790). 



