24 APPLIED ENTOMOLOGY 



In the male (Fig. 30) the arrangement of the organs closely corresponds to that 

 in the female. A pair of spermaries or testes is present in the upper front part 

 of the abdomen, each consisting of a rather closely-coiled mass of tubes, in which 

 the sperms are produced. The tubes on each side unite to form a single tube, 

 the vas deferens. These differ from the oviduct usually, in being much longer 

 and coiled or twisted. They pass downward and backward, however, and unite 

 on the middle line of the body below the alimentary canal, forming a single tube, 

 the ejaculatory duct, corresponding to the vagina in position, which leads back- 

 ward to an opening in front of the last segment. An enlarged portion of the vas 

 deferens is often present, for the temporary storage of the sperms, and is termed 

 the seminal vesicle. Accessory pouches opening into the ejaculatory duct appear 

 to be in part at least, for the production of mucus and secretions to mix with the 

 seminal fluid. 



