98 Transactions. 



A single specimen was found in our material. This species 

 has been recorded off Sombrero Island, West Indies ; and 

 from the South Pacific — amongst other localities mentioned 

 by Dr. Brady— off the west coast of New Zealand, 150 fathoms ; 

 off Sydney, 401 fathoms ; and off Moncceur Island, Bass 

 Strait, 38 fathoms. Dr. Flint found this species in the Gulf 

 of Mexico at 210 and 169 fathoms. 



Cristellaria cultrata, Montfort sp. 

 Robulus cultrata, Montfort, 1808, Conchyl. Syst., vol. i, p. 214, 



54e genre. 

 Cristellaria cultrata, Montf. sp., Flint, 1899. Bep. U.S. Nat. 



Mus. (1897), p. 318, pi. lxv, fig. 2. 



This species is common and widely distributed. It is 

 somewhat abundant in our material. 



Brady remarks of this species that it affects deeper water 

 than the non-carinate C. rotulata, and that fine specimens are 

 rarely met with at less than 100 fathoms. C. cultrata has 

 been recorded by the " Challenger " from station No. 169, off 

 the east coast of New Zealand. 



Cristellaria mamilligera, Karrer. 



Cristellaria mamilligera, Karrer, 1864, " Novara," Exped.,geol. 

 Theil, vol. i, Palaeont., abth. ii, p. 76, pi. xvi, fig. 5. 

 Bradv, 1884, Bep. Chad., vol. ix, v>. 553, pi lxx, figs. 

 17, 18. 



The previous records of this species as a recent form are 

 by Brady — off Kandavu, Fiji, 210 fathoms, and off the Philip- 

 pines, 92 fathoms. One well-grown shell occurs in our ma- 

 terial from Great Barrier Island. 



C. mamilligera was found as a fossil by Dr. Karrer in the 

 Tertiary greensandstone of New Zealand (Orakei Bay), and 

 by C. von Giimbel in the nummulitic marl of the Bavarian 

 Alps. 



Cristellaria costata, Fichtel and Moll sp. 



Nautilus cosratus, Fichtel and Moll. 1798, Test. Micr., p. 47, 



pi. iv, figs, g, h, i. 

 Cristellaria custata, F. and M. sp., Brady, 1884, Kep. Chall., 



vol. ix, p. 555, pi. lxxi, figs. 8, 9. Milieu, 1903, Journ. 



B. Micr. Soc. p. 258. 



This is a rare form in recent deposits, the " Challenger " 

 having only recorded it from three stations — at the Canaries, 

 off Kandavu, Fiji, and off Baine Island. Tones Strait. C. cos- 

 tata has also been reported from the shores of the Adriatic, 

 and Millett observed it in soundings from the Malay Archi- 

 pelago. Two specimens were found off Great Barrier Island. 



