448 EDWIN S. GOODRICH. 



This view is supported by the following experiment : — If a 

 living worm be injected with a mixture of Indian ink and 

 carmine in sea water, and opened a few hours after, it will be 

 found that of the mixture which has entered the coelom the 

 solid particles have been ingested by the amoeboid cells, whilst 

 the small quantity of carmine which was dissolved has been 

 taken up by the nephridium. In such a specimen the nephridia 

 are tinged a delicate pink colour, which can be distinctly seen 

 with a lens. 



The solenocytes do not appear to be in anyway affected by 

 the injection, and the pink colour is entirely due to the carmine 

 having been deposited in globules occupying the same position 

 in the nephridial cells as the yellow excretory matter in an 

 uninjected specimen. Never have I found solid particles of 

 carmine or Indian ink in these cells. 



The nephridial sac, on the other hand, seems to be concerned 

 with the elimination of solid waste products. Before discussing 

 this question, however, I wish to make a digression on the 

 subject of the ccelomic fluid of Glycera. 



It is well known that in this genus there is no separate 

 canalicular blood system, and that the coelomic fluid contains 

 numerous heematocytes, or round flattened nucleated cells, 

 stained red with ha3moglobin. 



In the coelomic fluid of Gl. convolutus are found a large 

 number of these round hsematocytes deeply stained with 

 hsemoglobin, a relatively small but yet considerable number of 

 white amoeboid cells, leucocytes, and a number of rather larger 

 oval and flattened cells containing minute colourless granules 

 (these cells are quite similar to those found in GL unicornis, 

 shown in fig. 6). 



On examining the coelomic fluid of specimens which have 

 been injected with carmine and Indian ink, it is found that 

 the foreign granules have been taken up rapidly by the 

 leucocytes, which soon become filled with them. No particles 

 occur in the red or in the oval cells ; these would appear, 

 then, to be neither amoeboid nor phagocytal. 



In Gl. siphonostoma the majority of coelomic cells are 



