742 EDWIN S. GOODRICH. 



to enable us to compare these organs with their homologues 

 in other Coelomata. 



To the genital duct of ccelomic origin in general the name 

 ccBlomoduct^ may be applied. For its special funnel-like 

 opening, which I have variously designated by the descrip- 

 tive terms " ciliated organ/' "genital funnel," and "peri- 

 toneal funnel " (8, 10, 11, and 12), I propose the name coelo- 

 mostome. 



When, as in the Annelids, the ccelomostome still fulfils its 

 primitive genital function, it may be termed, more particu- 

 larly, the Gonostome. 



For the primitive excretory organ, such as is found in 

 Nereis or Capitella, the name Nephridium must of course 

 be retained, and its ccelomic opening called the nephri- 

 diostome; but, for its closed representative in the Neph- 

 thyidte, Glyceridse, and Phyllodocidte, and for closed "head- 

 kidneys," the term Protonephridium might, perhaps, be 

 used with advantage. It is the name proposed by Hatschek 

 for the closed nephridia of the Platyhelminths. The tube- 

 bearing cells have already been called Solenocytes ('Proc. 

 Int. Congress Zoology,'' 1898, pp. 196 and 12). 



The ordinary wide-mouthed segmental organs of the Poly- 

 chaeta, formed by the fusion of the nephridium with the 

 genital funnel, may be called Nephromixia.^ Thus a 

 nephromixium = a nephridium + a ccelomostome. 



List op Works referred to. 



1. Benham, W. B. — "The Post-larval Stage of Arenicola marina," 



' Jouni. Marine Biol. Assoc.,' vol. iii, 1893. 

 la. BiJKGER, 0. — "Die Nemertiuen," 'Fauna uud Flora des Golfes von 

 Neapel,' vol, xxii, 1895. 



2. Claparede, a. R. E. — 'Annelides Chetopodes du Golfe de Naples,' 



Geneva, 1868, apd supplement, 1870. 



3. CosMOVici, L. E. — " Glandes genitales et organes segmentaires des Anne- 



lides Polychetes," 'Arch. Zool. Exp. et gen.,' vol. viii, 1879—1880. 



Kindly suggested to me by Professor E. Hay Laukester. 



