340 



THE STUDY OF INSECTS. 



more closely united to radius than to cubitus, leaving the 

 latter apparently three-branched ; while in the Lasiocampidse 

 cubitus appears to be four-branched. 



This superfamily includes the Bombycidae which are 

 represented in this country only by the Chinese Silkworm 

 and three families of native moths. These can be separated 

 by the following table : 



A. Vein V 2 of the fore wings arising midway between veins Vj and 



V 3 . p. 340 BOMBYCID/E. 



AA. Vein V a of the fore win^ arising nearer to vein Vi than to vein 



V 3 . 



B. Hind wings with two anal veins. 



C. The stalk of veins Vi and V 2 of the fore wings separating 

 from radius before the end of the discal cell (Fig. 420, c. v.}. 



p. 342 HEMILEUCID^E. 



CC. Vein Vi of t he fore wings separating from radius beyond the 



apex of the discal cell. 



D. Veins Vi and V 2 of the hind wings joined to radius by a dis- 

 tinct stalk (Fig. 417, c. v.~). p. 343 CITHERONIID^E. 



DD. Vein Vi and V a of the hind wings not stalked (Coloradtd), 



p. 350 SATURNIID^E. 



BB. Hind wings with only one anal vein. p. 350. . .SATURNIID/E. 



Family BOMBYCID/E (Bom-byc'i-dae). 

 The Silk-ivorm. 



The Bombycidae as now restricted are not represented in 



our fauna ; but a single 

 species, the Silk-worm, is 

 frequently bred in this 

 country, and is usually 

 present in collections of 

 Lepidoptera. 



The Silk-worm, Bojnbyx 

 mori (Bom'byx mo'ri). 

 The moth (Fig. 418) is of a 

 FIG. 4i8.-Boiiyjr morf. cream-color with two or 



three more or less distinct brownish lines across the fore 



