Hovis. ~- Cephalopoda. 
PLATE 5. 
Fig. 1. Polypus pusillus. 
A portion of the radula; X 45. 
Fig. 2. Polypus januarii. 
A portion of the radula; X 40. 
Figs. 3-9. Polypus, sp. 
9. Ventral view of a specimen showing the yolk-sac protruding from 
between the arms; from a photograph; natural size. 
4. Dorsal view of another specimen; from a photograph; natural size. 
5. Portion of an arm near the distal extremity, showing the double row 
of suckers changing into a single one; X about 4. 
6. Portion of an arm near the middle, showing the double row of 
suckers — in reality a zigzag; X about 4. 
7. Portion of an arm near the proximal extremity showing the single 
row of close-set suckers ; X about 4. 
8. Ventral aspect, the mantle opened and turned back on the left side, 
to show the reflected posterior margin of the funnel and the curved ridge 
on the inner surface of the mantle which fits in behind it; X 2. 
9. Portion of the radula; x 120. 
Figs. 10, 12. Japetella prismatica. 
10. Portion of the third left arm, showing the enlarged suckers; X 2. 
12. Funnel organ, from the type in the “ Challenger " Collection; X 3. 
Fig. 11. Eledonella diaphana. 
View of the dorsal wall of the funnel, showing the funnel organ; X 4. 
Fig. 13. Loligo diomedeae, sp. n. 
Dorsal view of the body; natural size. 
