2-2-2 "TERRA NOVA" EXPEDITION. 



17. l.innicinii retroversa (Fleming). 



Hrti-i-nj'itxiix i-i li-Hi-ri-xiig, Fleming, 1828; Gould. 1870. 

 A/liiiiln 1 1-< -lt i form lx, d'Orb., lS.'!5-47. 

 Spirialis flemingii, Forbes and Hanley, 1850. 



,, ri'trni-i-i'xtix (pars), Jeffreys, 1869. 

 Lhiiiichiii ImJi'ii (pars), Boas, 1886. 

 australis, Pelseneer, 1888. 



triM-Uf'oriiiix, Uray, 1850; Boas, 1886; Pelseneer, 1888; Tesch, 1904; Vayssiere, 



1913. 

 retrorprfta, Bonnevie, 1913 ; Vayssiere, 1915. 



Near Eio de Janeiro. 

 Station 40. six. 

 47, five. 



These are smaller and darker than the specimens of L. bale//, Moller, in the present 

 collection, and the spire is much shorter in proportion to the width of the last whorl. 

 Bonuevie (1913, text-tig. 9, A & B, p. 16) has shown clearly the principal difference 

 between this species and L. hull n. 



D/xfri/iiiflan. " Restricted to the warm and temperate waters of the Pacific and 

 Atlantic Oceans" (Bonuevie, 1913). Mediterranean, British Isles, and occasionally off 

 Norway (G. 0. Sars). 



18. Pi'i'dr/ix, sp. 



Station 93, off N. end of New Zealand, one. 



This is a very small specimen, and the shell is in very bad condition. It consists 

 of 2j whorls, and has radial furrows on the suture of the last whorl. It is more like 

 PiTni-lifi brevispira, Pels., than any other species of the genus as yet described, but as 

 the shell is very soft it is impossible to ascertain if the general surface is smooth. The 

 sub-circular operculum is striated obliquely. Both animal and shell are white, and 

 there are two white symmetrical tentacles. Bounevic (1913, p. 7) thinks that probably 

 P. brevispira, Pels., and P. bispinosa, Pels., will prove to be Peraelis diversa, Monte- 

 rosato, with which species she identifies the P. reticulata of Meisenheimer (1905, p. 12). 

 P. flivei-ffi, should this view prove *to be correct, will then be found to be a widely 

 scattered species in the Atlantic and. Indo-Australian waters from about 40 N. 

 to 30 S. 



