NAUTILUS. 



Plate VI. 



Species 5. (Mus. Cuming.) 



Nautilus macromphalus. Naut. testa suborbiculari, 

 leevi, subampliter excavato-umbilicatd, albidd, castaneo- 

 ferrugined, profuse transversim strigatd, strhjis laiws- 

 cnlis. 



The deeply umbilicated Nautilus. Shell nearly or- 

 bicular, smooth, rather largely excavately umbili- 

 cated, whitish, profusely transversely streaked with 

 chestnut-rust, streaks rather broj d. 



Hab. Isle of Pines and New Caledonii ; Bennett. 



A well-marked species, of uniformly smaller size than 

 the rest. The umbilicus is largely excavated, but not spi- 

 rally angulated, as in N. scrobicuMus and umiilicatus. 

 The painted rays are invariably more numerous, and of a 

 darker chestnut hue. Dr. Bennett mentions that a lady 

 residing at the Isle of Pines sent him to Sydney, at his 

 request, a fine specimen, with the animal. She informed 

 him that the natives readily procured them by diving; 

 and soon after sent him a second specimen, both of which 

 he placed in the Australian Museum. 



June, 1861. 



