66 



EISEN 



Penial glands. — In a longitudinal section two separated bunches of 

 glands forming two separate papillae, one situated in front of the 

 other. Both bunches of equal size, but not strictly in the same plane. 

 As there were no specimens to spare for cross-sectioning, it was not 



possible to ascertain 

 the whole extent of the 

 glandular structure. 

 The sperm-duct pene- 

 trates the body-wall be- 

 tween the two glandu- 

 lar papillae, but there 

 are no glands entering 

 the ducts. 



Nephridia . — These 

 organs show great sim- 

 ilarity to those of ^. 



77icebii Mich., as well 

 Fig. 36. EnckytrcBus metlahatlensis. ^^ ^^ ^\^q^^ ^f ^ ^/^^. 



kce. The duct connecting with the nephropore wide, becomes narrow 

 only when it joins the main body of the nephridium. The inner duct 

 is coiled in such a manner that it is impossible to follow its windings 

 for any distance. 



Lyjuphocytes (fig. 34, a) . — These long and unusually narrow bodies 

 are present in considerable numbers. They attach themselves every- 

 where by means of their pointed ends. 



Sperm-sacs . — There is no doubt about the presence of a coelomic 

 membrane surrounding the developing spermatozoa, thus constituting 

 a regular sperm-sac. Where the sac penetrates the septum X/XI a 

 few trabeculae are seen to extend forward through the mass of develop- 

 ing spermatogonia. 



ENCHYTR^US KINCAIDI sp. nov. 

 ^■^ pi. xviii, figs. 2-4; text-figs. 37 and 38. 



Definition. — Length 20 to 2^ mm., width .75 mm. Somites 

 about 67. Setae : anterior ones slightly more slender than the pos- 

 terior ones; laterals, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, etc.; 

 ventrals, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, o, 2, 2, 2, etc. Other specimen : 

 laterals, 3, 3, 3, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, etc. ; ventrals, 3, 3, 

 4r 45 4^ 3^ 3^ 3^ 3' o, o, 3, 2, 2, 3, etc. Body-wall transparent. 

 Prostomium blunt, rounded, intersegmental grooves shallow. Cli- 



