McCracken, Egg-laying Apparatus of Silkworm. 281 



Series l^. Moth mate J, afterward dethoraxed and stimulated at various intervals. 



TABLE VI. 



TABLE Yl— Continued. 



to open, and no egg appears. If, now, the sensory hairs that cover 

 the outer surface of the ovipositor be barely touched w^ith a pencil, 

 or if a fiber of cotton held by a pair of pincers is brought into con- 

 tact with these hairs, the lips of the ovipositor immediately open 

 and an egg is pushed out. Each such contact brings forth an 

 egg. In an insect in normal position, the sensory surface of the 



