690 DR. F, E. BEBDARD ON 



The testes of this worm are chiefly massed at the two sides of 

 the proglottid, but these two masses are connected by a string 

 of testes which pass dorsally along the proglottid. They therefore 

 nearly surround the ovary and the female organs generally, so far 

 partly resembling Cyclorchis. In transverse sections the testes 

 appeal- circular in section ; but sagittal sections such as that 

 represented in text-fig, 99 (p. 688) show that the form of the testes 

 is that of a flat plate, for in those sections they appear more linear 

 in shape. These sections also show quite plainly that each testis 



Text-fig. 100. 



:sp. 



A portion of tlie coil of tlie sperm-duct (sp.) gorged with sperm. 

 c. Interstitial prostatic cells. 



lies in a space, unless, indeed, the appearances produced are due 

 to shrinkage through reagents. In any case, however, the testes 

 of these worms frequently present the appearance of being sur- 

 rounded by the spermatozoa which they pi'oduce, thus showing 

 that a chnik exists or can be formed for their recejition when 

 pressed out of the testis. The testes are very numerous and 

 quite crowded together, — so much so that the delimitations 

 between successive seorments so far as concerns these organs 



