VANIKORO. 67 



Section Yelutella, Graj^, 184Y. 

 V. PLiCATiLis, Miiller. PL 28, figs. 55-57. 



Nearly membranous, translucent, Tvitli obscure spiral striae and 

 irregular growth-lines ; yellowish or yellowish brown ; whorls 2^, 

 ventricose in fresh, but compressed (from collapse) in dried 

 specimens, suture deep ; epidermis tough, but readily separated 

 into slight fibrous plaits. Length, "5 inch. 



The animal is bright orange color, sometimes speckled with 

 j^ellow. 



Northern Europe^ Greenland. 



Is Bulla flexilis, Montagu. V. coriacea, Pallas, may be only a 

 large A'ariet}^ 



Y. CORIACEA, Pallas. PL 27, figs. 49, 50. 



Membranaceous, corneous, subpellucid, rugosel^' striate ; 

 whorls 2^, the last very large, expanded. 



c^> Kurile Islands. 



Y. CRYPTOSPiRA, Middendorff. PL 2/, figs. 45-47. 



Shell narrower, more elongated than V. laevigata, the columellar 

 lip forming an angle with the outer lip below ; coriaceous, or with 

 a very slight calcareous deposit. Length, 10 mill. 



Ochotsk Sea, Alaska, etc. 



Undetermined and Unfigured Species. 



Y. Bernardi, Martens (PL 28, fig. 58). Hah. unknown. 



Y. pusio, A. Ad. Straits of Corea. 



Y. SiGARETiFORMis, Poticz. (A 3'oung Natica ?) Australia. 



Y. SiTKENSis, A. Ad. Sitka. 



Y. STYLiFERA, Fleming = Siylifer Turtoni. 



Y. MARGARiTACEA, Duclos. Australia. 



Subfamily III. YANiKORiNiE. 

 Genus YANIKORO, Quoy and Gaimard, 1832. 

 Y, CANCELLATA, Lam. PL 29, figs. 60, 61. 



Broadly patulate, rather thick, cancellated with oblique rather 

 lamellar ribs and thin spiral ridges ; epidermis 3'ellowish brown. 

 Diam. 1 inch. 



Isl. of Vanikoro, 



