Plate VII. 



Fiij. 1. Oral di.sk of Edwardsia A.Umanni,Wl., completely contracted. 

 Enlarged. 



/•'»/. l'. The same, with the tentacles partially expanded. 



Fig. 3. Anterior portion of the sheath and pouting rim of the mouth. 

 Viewed laterally. 



Fig i \ single tentacle. Enlarged. 



Fiii. ■'>. View of the posterior part of Kilirnnhin (inodsirt, Ml., Bhov 

 the •■ blown-bladder" aspect. 



/ ''. The oral disk- with expanded tentacles. 



Fnj. 7. \ single tentacle. Enlarged. 



/•V','. 8, \n entire colony of Alcyonium digitatum, I... with the polyps in 

 varying degrees of expansion. 



■Fui. 9. External view of a polyp on a level with its cell. 



Fnj. 10, The same, more expanded, 



/•'/</. 11. A polyp half-expanded. 



/ 12. A polyp of the -aim', iniirh attenuated, -lumiiiL r the minute 

 spicula and the somewhat fusiform aspect of the expanded 

 arms. 



Fig. 18. Doru repanda, \. & II., in process of spawning : a, the dimph 



of the i'".it. The arrow marks the direction of it- turning. 

 Seen through a g] iss vessel. 



Fiii. 14. The same, in another position, with the cloak much folded 



Fig. IV Spawn of the foregninir. The -ingle interrupted chain of ova 

 appended thereto i- exceptional. 



Fig. L6 A scolex of Tetrarhynchm from the stomach of Cancer pagurus, 

 encysted. Probably from the de"bris of fishes eaten by tin- 

 crab. X about (iO diameters. 



Fig. 17. The same, separated from the sheath and somewhat compressed. 

 X 66 diam. 



Fig. L8, Echinorhynchus ftittmostts, Rud., from tie- uitesti fa common 



■ ■■al (Phoca vittUina) c bt at 3t. Andrews, x 60 diam. 



