Explanation of Plate XV. 



( CoéldbrancJius) . 



Pig. 1. Dorsal view of a mature female of OoelobrancJms papillosus 



u. g. et n. sp. 2/1. 



Dorsal view of the anterior extremity of same. 5/1. 



Jaw-apparatus of the same species. 140/1. 



Simple bristle of same. 667/1. 



Compound bristle of same. 667/1. 



A cross-section of the body of same, showing diverticula of 



alimentary canal extending into branches of gill. (Eggs are 



contained not only in the body-cavity but also in the cavities 



of gills). 31/1. 

 Pig, 7. Another cro^s-section of the body of same, showing intestinal 



diverticula reaching to distal end of gill-filaments. 31/1. 



Pig. 



% 



Fig. 



3. 



Pig. 



4, 



Pig. 



5, 



Fie:. 



6, 



