smith: on the gentts vanikoso. 113 



described in tlie diagnosis, and I think there is little doubt that they 

 are one and the same species. Natica margaritacea, Pot. & Mich., 

 may be identical. 



22. Vanikoro imbeicata, Pease. B.M. 

 Vanikoro imlricata, Pease: Proc. Zool. Soc, 1860, p. 435; Sowerby, 

 Conch. Icon., fig. 17 (fair); Thes. Conch., p. 170, fig. 11 ; Tryon, 

 p. 70, fig. 86 (copy of Thesaurus, as young of F. acuta). 

 Hah. — Sandwich Is. Type in B.M. 



A thin, very widely unibilicated species, oblique, closely, obliquely, 

 and finely Urate, with close spiral striae between the lirae, neither 

 visible to the naked eye. The strong plicse within the umbilicus are 

 quite evident, however, without the aid of a lens. V. acuta, with 

 which this species was united by Tryon, has no oblique lirse, and is not 

 of the same oblique form. 



23, Vanikoro striata (D'Orbigny). B.M. 

 Narica striata, D'Orbigny: Hist. Cuba, Moll., vol. ii, p. 40, pi, xvii, 

 figs. 29, 31; Eecluz, Eev. Zool., 1844, p. 47; Mag. de Zool., 

 1845, p. 57, pi. cxxxii, figs. 1, 2; Tryon, p. 69, pi. xxix, fig. 80, 

 ^aJ,— Cuba, Type in B.M. 



I do not think V. oxyclione and V. vitrinmformis of Morch are 

 synonymous with this species, as suggested \>j Tryon. Both are very 

 small species possessing characters not found in V. striata. 



24. Yanikoro Natalensis, n.sp, B.M. 

 Narica acuta, var. 7, Recluz : Mag. de Zool., 1845, p. 61, 



Testa V. striates simillima, sed striis gracilioribus, anfractibus 

 superioribus magis tenuiter cancellatis. Diam. maj. 10'5, alt. 10 mm. 



^rti.— Scottsburgh (H, Burnup) ; Bluff, Durban (G. W. Westcott) ; 

 Natal (Eecluz), 



