LIST OF ILLUSTKATIONS XV 



PLATE XVII. 



To face p. 397. 



Page 

 a. MicroniscTis oalani, Sars. Sars .... 397 



6. Cypronisous cypridinsg (Sars). A female (with a male 



in the normal position) affixed to the body of a Cypri- 



dina norvegioa. The right valve of the host has been 



removed. Sa/rs ...... 397 



c. Adult ovigerous female of the Cyproniscus, detached,, and 



viewed from above 



d. Younger female, not yet ovigerous, in lateral view 



c. Male, probably adult, with the anterior extremity carrying 

 two root-Kke processes, and embedded in the skin of the 

 Cypridina 



/. Larva ia the last stage of development, seen from above 



PLATE XVIII. 

 To face p. 414:. 

 Portunion msnadis, Giard, on Carcinus msenas (Pennant). 



Oiard and Bonnier ..... 407 



Portunion Kossmanni, Giard and Bonnier. Giard and 



Bonnier ....... 408 



Canoricepon elegans, Giard and Bonnier. Lateral view of 



female ; dorsal view of male and female. Giard and 



Bonnier ....... 413 



Gigantione Moebii, Kossmann. Dorsal and ventral view of 



female. Kossmann ..... 414 



PLATE XIX. 

 To face p. 425. 



Helleria brevicornis, von Ebner 



The head from above, the head and pleon from below ; 

 the antenna ; mandible, lower lip ; first maxilla, second 

 maxiUa, maxiUiped ; first leg ; rudimentary first pleopod 

 with opercular plate of the second, stUet of the second 

 pleopod, fourth pleopod showing the opercular plate 

 broadside and edgeways, and the peduncle with the bran- 

 chial plate ; uropod. Von Ebner 



