558 Transactions. 



Rhyssoplax corypheus (Hedley and Hull). 



Chiton corypheus Hedley and Hull, Pro. Linn. Soc. N.S.W., 37, 277, 



1912. 

 Eecorded, Iredale, Pro. Mai. Soc, xi, 41, 1914 (Rhyssoplax exasperata). 



Here again I consider Iredale has overestimated the value of the dis- 

 tinguishing characters of the Kermadec Chitons. There is no good cha- 

 racter by which the Norfolk and Sunday Island shells can be differentiated, 

 but, recognizing the differences pointed out by Iredale, the Kermadec foim 

 may (as suggested by him) be ranked as a subspecies of corypheus, thus : — 



Subsp. exasperata (Iredale). — Differs from the type in having the sulci 

 weaker and less nodulous. 



Habitat. — Living on the underside of clean smooth stones near low- 

 tide mark, Sunday Island. 



Distribution (of species). — Norfolk Island. 



Sympharochiton themeropis Iredale. 



Sympharochiton themeropis Iredale, Pro. Mai. Soc, xi, 43, 1914. 

 Recorded, Iredale, I.e. 



Habitat. — Living in crevices of rocks between tide-marks, Meyer Island. 



Onithochiton oliveri Iredale. 



Onithochiton oliveri Iredale, Pro. Mai. Soc, xi, 46, 1914. 

 Recorded, Iredale, I.e. 



Closely allied to . filholi Roch, of New Zealand. 



Habitat. — Living in crevices of rocks between tide-marks, Meyer Island ; 

 not common. 



Cephalopoda. 

 Nautilus pompilius Linne. 



Nautilus pompilius Linne, Syst. Nat., ed. x, 708, 1758. 

 Recorded, Iredale, Pro. Mai! Soc, ix, 72, 1910. 



Habitat.- — Broken shell washed up on beach, Sunday Island. 

 Distribution. — Austrr.Ua> New Hebrides, Fiji, Polynesia. 



Nautilus macromphalus Sowerby. 



Nautilus macromphalus Sowb., Thes. Conch., 464, 1848. 

 Recorded, Iredale, Pro. Mai. Soc, ix, 72, 1910. 



Habitat. — Broken shell washed up on beach, Sunday Island. 

 Distribution.- — New Caledonia. 



Spirula spirula (Linne). 



Nautilus spirula Linne, Syst. Nat., ed. x, 710, 1758. 

 Recorded, Iredale, Pro. Mai. Soc, ix, 72, 1910. 



Habitat. — Dead shells washed up on the beaches, Sunday Island, often 

 in large numbers. Portions of the animal were also found. 



Distribution. — Lord Howe Island, New Zealand, tropics generally. 



Symplectoteuthis oualaniensis (Lesson). 



Loligo oualaniensis Lesson, Voy. " Coquille," Zool., ii, 240, 1830. 

 Recorded, Berry, Trans. N.Z. Inst., 46, 148, 1914. 



Habitat. — Rarely washed up on the beaches, Sunday Island 

 Distribution. — Australia, Indian and Pacific Oceans. 



