PLATE IX. 



PAGE 



Figs. 1, 2. Japetella pkismatica, n. gen., n. sp., . . 109 



Fio-. 1. Ventral aspect of the specimen ; natural size. 

 Fig. 2. Dorsal aspect ; natural size. 



Figs. 3-6. Eledonella diaphana, n. sp., . . 107 



Fig. 3'. Ventral aspeet of the specimen ; magnified 2 diameters. 



Fig. 4. Ventral aspect, with the mantle divided a little to the left of the middle 

 line, and reflected to show the median septum, the arrangement of 

 the gills, &c. ; magnified 2 diameters. 



Fig. 5. View of the arms and umbrella from the front ; magnified 1"5 diameters. 



Fig. 6. Portion of an arm with five suckers, showing the prismatic form which 

 they have assumed ; enlarged. 



Figs. 7 9. Amphitretus pelagicus, n. gen., n. sp., . . 67 



Fig. 7. Lateral view of the animal ; magnified 2 diameters. 



Fig. 8. Ventral -vdew of one of the arms and of the mouth, the proximal suckers 

 are somewhat too close ; magnified nearly 2 diameters. 



Fig. 9. Tip of one of the arms magnified about 4 diameters. 



Figs. 10, 11. CiRROTEUTHIS Sp., . . . 66 



Fig. 10. Sucker taken from large dead Ciri-oteuthis^ with portion of cutaneous 

 membrane attached ; slightly reduced. 



Fig. 1 1 . Section of a similar sucker ; slightly enlarged. 



Figs. 12, 13. CiRROTEUTHIS MEANGENSis, Hoyle, . . 63 



Fig. 12. Ventral view of the specimen; the postero-lateral angles should be a 

 little more pronounced ; magnified 4 diameters. 



Fig. 13. Side view of the same specimen ; magnified 4 diameters. 



