400 ^- '^- MacCallum, 



Th ovary (Fig. D b), in tlie form of a long bent tube lies across 

 the body at about its middle, giving off tlie ovidnct at its left end. 

 This passes backward receiving the duct from the clubshaped seminal 

 reservoir and then the conjoined canal from the vitelline glands 

 until it reaches the shell gland which in this case extends dorsally 

 before the uteriis changes its cour^e toward the genital pore, 



The eggs, of which 3 were to be seen in one specimen are rela- 

 tively large, have a very long tangled fllament at each end, in which 

 respect they differ from those of some closely related forms. 



The festes are large and number from 20 to 35. The Vas de- 

 ferens is tortuous and ends in the cloaca without any evident mns- 

 cular cirrus, The caudal disc bears about one hundred and six 

 suckers in a simple row along its margin. These are all alike and 

 there are no hooklets or spines. Their chitinous skeleton is not 

 especially characteristic and is sbown in Fig. Dd. 

 Measurements : 



Length : 8 X 0,8 mm. 

 , Sucker disc: 1,5 mm lang. 

 Suckers: 106. 

 Width of head: 0,21 mm. 

 Diam. of disc suckers: 0,08X0,04 mm. 

 Diam. of oral suckers : 0,1 X 0,07 mm. 

 Ova: 0,17X0,07 mm. 

 Testes: 25 to 35 — 0,09X0,07 mm. 

 Genital pore, armed: 0,1X0,08. 

 Vaginal opening: 0,03. 

 Locality: New York Fish Market. 



