454 EDWIN S. GOODRICH. 



this specimen can be actually seen to pass out by its means 

 (fig. 38). 



In front of the communication between the two organs the 

 nephridial canal passes forwards to the lip of the genital funnel, 

 round which it runs inwards to the terminal nephridial organ 

 beset with solenocytes (figs. 37 and 31). Nephridium and 

 genital funnel are, therefore, really quite independent, except 

 at the point of junction behind. 



In other specimens, unripe males and females, the ciliated 

 organ is much less developed, being represented by a scarcely 

 opened funnel, the epithelium of which is composed of rela- 

 tively small closely packed cells, often not yet provided with 

 cilia. Posteriorly this rudimentary organ abuts on, but does 

 not actually open into, the nephridial duct. 



In the specimen of G. emerita, which shows no signs of 

 maturity, the funnel is even less developed, being completely 

 closed and entirely without cilia (figs. 33 and 34). 



Owing to the unexpected discovery of nephridia with " tube- 

 bearing cells" or solenocytes in the Phyllodocidae, I have been 

 obliged to postpone the general summary and theoretical 

 conclusions of these researches to a third part, which I hope 

 to publish in the near future. I may so far anticipate these 

 conclusions as to point out that it has been shown in the fore- 

 going pages that the " ciliated organ" is the morphological 

 representative of the peritoneal or genital funnel of other 

 Annelids, and probably of the Coclomata in general. 



List op Refekences. 



1. CuENOT, L. — " Etudes physiologiques sur les Oligochetes," ' Arch. Biol.,' 



vol. XV, 1897. 



2. Ehlers, E. — 'Die Borstenwiirmer,' Leipzig, 1864-8. 



3. GoouiucH, E. S. — " Ou a New Organ in the Lycoridea," ' Quart. Journ. 



Micr. Sci.,' vol. xxxiv, 1893. 



4. Goodrich, E. S. — " On the Nephridia of the Polycha;ta," ' Quart. Jouru. 



Micr. Sci.,' vol. xl, 1897. 



