114 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



It is with some hesitation that I have ventured to regaixl this form 

 from Natal as distinct from the West Indian V. striata, d'Orb. 

 The striation of the body- whorl certainly is finer, and the cancellation 

 of the antepenultimate whorl is decidedly less coarse. Mr. Burnup's 

 specimen, the dimensions of which are given above, consists of 

 four and a half whorls. Of these the first, forming the minute apex, 

 is smooth, reddish, convex, the next exhibits about ten fine radiating 

 plicae with fine spiral striae between them, and the third has about 

 fifteen much coarser radiating riblets. A few more distant faint plicae 

 are then visible upon the commencement of the penultimate whorl, 

 and the last exhibits only oblique delicate lines of growth crossing the 

 fine spiral striae, which cover the entire surface, excepting in the 

 rather open umbilicus. The extreme apex of this shell is more raised 

 than that of F. striata. It is only by placing specimens side by side, 

 and carefully examining them, that the differences pointed out between 

 these two species can be satisfactorily appreciated. 



25. Vanikoro elata, Sowerby. B.M. 



Vanikoro elata, Sowerby: Conch. Icon., fig. 23 ; Thes. Conch., p. 170, 

 fig. 6 ; Tryon, p. 69, fig. 84 (copy of Conch. Icon.). 



^a^.— China Sea. Type in B.M. 



A very narrowly perforate shell, very finely spirally striated, striae 

 crossed by faint lines of growth, not decussated as described by 

 Sowerby. The first whorl is wanting, but the second exhibits two 

 spiral keels. The columella is expanded and reflexed, partly concealing 

 the umbilicus. 



26. Yanikoro acuta (Recluz). B.M. 



Narica acuta, Recluz : Rev. Zool., 1844, p. 47 ; Mag. de Zool., 1845, 



p. 60, pi. cxxxiii, figs. 1, 2. 

 Vanikoro acuta, Sowerby: Conch. Icon., figs. 21«, h (very coarse); 

 Thes. Conch., p. 169, fig. 12; Tryon, p. 69, fig. 85. 



Hob. — Lord Hood I. ; Moluccas. Type in B.M. 



An exceedingly finely spirally striated species, widely umbilicated, 

 with rather strong growth-lines within the umbilicus. This species is 

 quite distinct from V. lamellosa, D'Orb., and V. imhricata, Pease, which 

 have been united with it by Tryon. Evidently he came to that 

 conclusion without having specimens before him for comparison. 



27. Vanikoro disparilis, Deshayes. 

 Vanilcoro disparilis, Deshayes : Maillard's lie Reunion, vol. ii, p. 77, 

 pi. xxxvi, figs. 15, 17 ; Tiyon, p. 69, fig. 83 (copy of Deshayes, 

 as synonym of V. clatlirata). 

 Hah. — He Reunion. 



Known to me only by the description and figure, but evidently, 

 from its minutely decussated surface, it is quite distinct from V. clathrata, 

 with Avhich it is united hj Tryon. 



28. Vanikoro Souleyetiana (Recluz). 

 Narica Souleyetiana, Recluz: Mag. de Zool., 1845, p. 67, pi. cxvii 

 (animal), pi. cxviii (anatomy), pi. cxxxv, fig. 1 (shell). 



