HorLE. — Cephalopoda. 



PLATE 6. 



Figs. 1-7. Loligo diomedcae, sp. ii. 



I, 2. Sucker from the third right arm ; X GO. 



3. A large tentacular sucker; X 35. 



4. Portion of the rim surrounding the horny ring; X 170. 



5. A lateral tentacular sucker ; X 60. 



6. Portion of the horny ring and surrounding rim ; X 170. 



7. A sucker from tlie outer lip ; X 45. 

 Figs. 8-1 1. Mastiijoteuthis dentata, sp. n. 



8. Sucker from the middle of the ventral arm ; X 55. 



9. Portion of the horny ring and adjoining rim, indicated by the dotted 

 lines in Fig. 8; X 170. 



10. Female specimen with the mantle cavity laid open; natural size. 



II. Male specimen with the mantle cavity laid open ; X |. 

 The last two figures from drawings by Dr. J. II. Ashworth. 



Figs. 12, 13. TaoniHS, sp. 



12. Portion of the stalk of the tentacle sliowing the rudimentary 

 suckers ; X 35. 



13. Posterior extremity of the mantle and pen ; X 15. 



