PLATE XIII. 



PAGE 

 Figs 1-4. CiRROTEUTHIS MAGNA, n. Sp., . . . 56 



Fig. 1. The dorsal cartilage, seen from the posterior aspect ; natural size. 



Fig. 2. The same cartilage, seen from above, showing the thin margins bending 

 inwards over the dorsal surface so as to enclose a narrow space ; 

 natural size. 



Fig, 3. Dorsal view of the cartilage of the specimen figured in PL XL fig. 3 ; 

 natural size. 



Fig. 4. Posterior aspect of the same cartilage ; natural size. 



Figs. 5, 6. CiRROTEUTHIS MEANGENSIS, n. sp., . . .63 



Fig. 5. Posterior aspect of the cartilage of the specimen shown in PI. XL 

 figs. 1, 2 ; natural size. 



Fig. 6. Dorsal view of the same cartilage ; natural size. 



Fig. 7. Tremoctopus quoyanus, d'Orb., . . .70 



Fig 7. View of the head and arms, showing about five suckers of the hecto- 

 cotylised arm protruding from its sac ; magnified 3 diameters. 



Figs. 8, 9. Tremoctopsis gracilis (?), Eydoux et Souleyet, . 71 



Fig. 8. The animal seen from the right ventro-lateral aspect, showing the hecto- 

 cotylised arm coiled up beneath the integuments ; magnified about 

 3 diameters. 



Fig. 9. The hectocotylised arm removed from the sac ; magnified 20 diameters. 

 a, the swelling which afterwards forms the cyst near the extremity. 



