CONTENTS OF PAET VI. 



PAGE 



34. Contribution to the Natural History of the Pearly Nautilus. 

 By ARTHUR WILLEY, D.Sc, I.I, S. 



I. Personal Narrative C91 



With eighteen figures. (Figures 1, 3, 4, 5, 6, 7, 8, 9, 15, 10 ami is are printed 

 separately as 7 pages, 



Arrival at Ralum, 692; Native currency, <i'.>3; Vulcan island, 694; Dredging in 

 Blanche Bay, 696; Commerce ami Language, <i<>7 ; Trapping Nautilus, 698; Ecto- 

 parasites, 7i»': New Hanover, Till; The wearing of the kahil, 702; Peripatus, 703; 

 The mystery of the pepe, 706; Maravot, 7'i s : * », 71<>; Rhodosoma 



huxleyi, 711; Spawn of Cephalopoda, 712; Malira. 713; Native fancies, 714; Talili 

 Bay, 715; Tubuan and Dukduk, 716; -Milne Bay and Hygeia Bay, 717; Amphisile 

 strigata, 718; Native devotion, 719; Ctenoplana, 7-n; Deboyne Group, 724; Lancelot, 

 725; Industries of Tubetube, 726; Ptychodera flava, 7J7 ; Prochordata, 728; Isle of 

 Pines and Man'-, ':',<>; Sandal Bay, Lifu, 731; Egg-laying of Nautilus, ~'-'d -, Axtrtw/crii, 

 733; See.. ml visit to New Britain, 734; Appendix, 735. 



II. Special Contribution ........... 73ti 



With Plates l.XXV. -LXXXIIL, a map and fifteen text-figures. 



1. Historical Survey 73(i 



2. External Form and Pigmentation 738 



3. Sexual Dimorphism 740 



4. Species and Etai ............. 743 



5. Mantle; Shell; Xuehal Melnhratie 746 



6. Ventral Paliial Complex 753 



7. Siphuncle and Pallia! Vessels ........... 7">1 



8. Funnel and Capito-pedal Cartilage 763 



9. Digital and Ophthalmic Tentacles 767 



10. Peristomial Baemocoel ; Systemic Aorta ; Cephalic Arteries 780 



11. Reproductive Organs and Genital Arteries ......... 784 



12. Mechanism of Respiration; Branchiae and Osphradia ; Renal and Pericardial Follicles 788 



13. Eye; Rhinophore; Otocyst ............ 793 



14. The Molluscan Foot 795 



15. Changes of Function, Organs and Topography 796 



16. Flexure and Orientation 798 



17. Morphology of the Tentacles of Nautilus 800 



18. Diplomerism of Nautilus ............ 804 



19. Affinities 805 



20. Food ; Migration ; Propagation 808 



21. Variation and Regeneration 810 



Description op Plates 813 



Index 827 



