INSECTS. 



491 



Fig. 247. 



1, The Antenna of the Silkworm-moth. 2, The Tongue. 3, A portion of the Tongue 

 highly magnified, showing its muscular fibre. 4, The Trachece of Silkworm. 

 5, The Foot of Silkworm. (The small circles enclose each about the natural 

 size.) 



