REPOET ON THE CEPHALOPODA. 47 



Order 11. TETRABRANCHIATA, Owen, 1832. 



Family XIV. Nautilid^, Owen, 1836. 



Nautilus,^ Linne, 1757. 



1. Nautilus ponipilius, Linne (p. 199). 



1758. Nautihis pompilius, Linn., Syst. Nat., ed. x. p. 708; No. 283, 232. 

 1868. „ „ Kiister, Conch. Cab., sec. 5b, p. 9, Taf. ii. fig. 2. 



2. Nautilus scrohiculatus, Solander, MS. 



Nautilus scrobiculafus, Sol., Portl. Catal., No. 3653. 

 1868. „ „ Kiister, Conch. Cab., sec. 55, p. 9, Taf. iii. figs. 1, 2. 



3. Nautilus macromphalus, Sowerby. 



1848. Nautilus macromphalxis, Sow., Thes. Conch., p. 464, pi. xcviii. figs. 4, 5. 

 1868. ■„ „ Kiister, Conch. Cab., sec. 55, p. 10, Taf. 3a. 



4. Nautilus umhilicatus, Lister. 



Natitilus umbilieatus, Lister, Conch., pi. 552, fig. 4. 

 1868. „ „ Kiister, Conch. Cab., sec. 55, p. 10, Taf. 3o. fig. 2. 



5. Nautilus stenomphalus, Sowerby. 



1848. Nautilus stenomphalus, Sow., Thes. Conch., p. 469, pi. xcvii. fig. 3. 

 1868. „ „ Kiister, Conch. Cab., sec. 55, p. 11, Taf. 3b. 



1 Having no sufficient personal knowledge of the different species of this genus I have followed Kiister (Joe. eit.) 

 in their enumeration ; what study I have had the opportunity of giving them leads me to think that they may, 

 perhaps, be reducible to two species, Nautilus pompilius, Linn., and Nautilus umhilicatus, Lister, with a number of more 

 or less well marked varieties. 



