ZOOLOGY or FERIfANDO NORONHA. 



487 



white, variegated with very dark brown or black. The single 

 specimen, wliich differs from the rest, is of a pinkish tint sparingly- 

 marked with rich brown. 



9. Oliva liteeata, Lamarck. 

 Hah. West Indies, Gulf of Florida. 



Two beach-rolled shells are all that were obtained. They have 

 the transverse lirae on the inner lip extending over nearly the 

 entire leugth of the columella. 



10. Oliva (Oliyella) nivea (Gmelin). 



Hab. St. Vincent and other islands of the West Indies, 

 Venezuela, and Brazil. 



The shell named by Mr. Watson * Oliva fulgida, Keeve, from 

 Fernando Noronha, does not belong to that species, but is a 

 prettily coloured example of O. nivea. O. fulgida differs from 

 Gmelin's species in the form of the columella and basal cauda. 

 The columella of O. nivea is very peculiarly excavated, and this 

 may be seen by looking as far within the aperture as possible. 

 No such excavation occurs in O. fulgida, which also does not 

 exhibit the numerous oblique folds or lirse on the columellar 

 margin of the aperture which distinguish 0. nivea. 



A second species is quoted with doubt by Watson from Fer- 

 nando Noronha, namely O.pulchella, DucIoh. The two fragments 

 referred to this species seem to me to bear little resemblance to 

 Duclos's figure ; but 1 have no hesitation in considering them 

 specifically identical with tlie other specimen from the same spot 

 which I refer to 0. nivea. 



11. Leucozonia cingulifera (Lamarck). 

 Hab. AVest Indies, Honduras, West Africa. 



L. rudis, Eeeve, is I consider quite distinct from this species. 

 With this exception I agree with Tryon in his synonymy, and 

 would even suggest the propriety of maintaining L. leiicozonalis, 

 Lamk., as a variety of this s[)ecies. 



The specimens from Fernando INoronhahave stout rounded 

 ribs, exhibit a distinct submedian white zone on the body-whorl, 

 and have the aperture inclining to orange. 



Tryon questions the West- African habitat of this species, but 

 I am inclined to think it correct, as in the British Museum there 

 are three specimens from that locality presented some years ago 



* Gasteropoda of the ' Challenger ' Exped. p. 224. 



