THE NEPHRTDIA OF THE POLTOHJITA. 745 



PAGE 



General Conclusions : 



The Genital Funnel 724 



The Connection between the Nepliridium and the Genital 

 Funnel ..... 



The Nephridiuin .... 



The Solenocytes .... 



Tlie Importance of the Nephridium in Classification 

 Proposed Nomenclature .... 



732 

 734 

 736 

 739 

 741 



EXPLANATION OF PLATES 37—42, 



Illustrating Mr. Edwin S. Goodricli's paper on " The Nephri- 

 dia of the Polychseta.^' 



PLATE 37. 



Fig. 1. — Enlarged view of the right side of a median segment of an imma- 

 ture female Van ad is Formosa, showing the genital funnel and the nephri- 

 dium by transparency. From the living. 



Fig. 2. — Portion of a section through two branches of the nephridium of 

 Aleiope cantrainii, showing the nuclei of the solenocytes. Cam. oil im. 



Fig. 3. — Enlarged view of the extremity of the nephridium of Aleiope 

 cantrainii. Only two branches are represented. From the living. 



Fig. 4. — Arrangement of the tubes of the solenocytes in sliort rows, between 

 which the outer cilia can work. 



Fig. 5. — Enlarged view of the terminal enlargement and external pore of 

 the nephridial canal of Aleiope cantrainii. From the living. 



Fig. 6.— Enlarged view of the inner end of the nephridium, and the rudi- 

 mentary genital funnel in a young Aleiope krohnii; 11th segment. 



Fig. 7. — Similar drawing of these structures in the 17th segment of the 

 same worm. 



Fig. 8. — Longitudinal section of Aleiope cantrainii, ripe male, showing 

 the genital funnels and nephridial canals filled with spermatozoa. Cam. 



PLATE 38. 



Fig. 9. — Enlarged view of a small portion of the nephridial canal, with its 

 solenocytes, drawn from a living Asterope Candida. Cam. Oil. im. jJ^, 

 oc. 6. 



