GARRETT: ON POLYNESIAN MiTRIDiE. 67 



162. Imbricaria conica Schumacher. Reeve, 1. c, pl.xxvii., 

 fig. 216. 



This species, which appears to be confined to the islands 

 south of the Equator, was obtained at all the groups except 

 Tonga and the Marquesas. They occur in sand in sheltered 

 places inside the reefs, and are gregarious. During two 

 years exploration in various parts of the Viti Islands, I found 

 only one large colony in a small patch of sand in the Kioa 

 shore reef. 



163. Imbricaria punctata Swainson. 



Mitra ossea Reeve, 1. c, pi. xxvii., fig. 219. 



Not very plentiful and ranges through all the groups 

 south of the Equator. Station the same as the preceding 

 species. 



It will be observed that I have restored Swainson's 

 name, which has precedence over Reeve's ossea. 



164. Imbricaria virgo Swainson. Reeve, 1. c, pi. xxvii., 

 fig. 214. 



Found (rarely) in all parts of Polynesia, except the 

 Marquesas. Lives in sand at low water mark. The colora- 

 tion is the same as Olivceformis. 



165. Imbricaria Vanicorensis Quoy & Gaimard. Reeve, 

 1. c, pi. xxvii., fig. 220. 



Somewhat rare and only occurred to our notice at the 

 Viti Islands, where they were found in sandy-mud near low 

 water mark. 



The spire and upper part of the body whorl is ashy- 

 grey, and the lower parts brownish-grey, and everywhere 

 dotted with flake-white and brown. 



Genus MITROIDEA Pease. 



Proc. Zool. Soc, 1865. p. 514. 

 Mauritia, A. Adams, Proc. Zool. Soc, 1869, p. 273. 



