46 AUKICULIDJE. 



blackish ; spire inflated, conic, pointed ; suture impressed ; 

 whorls five and a half, moderately convex, the last forming four- 

 sevenths of the total length, rounded at base ; aperture oblique, 

 semiovate, modified by three plaits ; parietal plaits two, con- 

 vergent, white, the upper one larger, arcuate ; columellar plait 

 dentiform, approximate to the second parietal one ; peristome 

 simple, straight, sharp, with the margins united by a shining 

 deposit; right margin furnished sometimes with several very 

 indistinct transverse ridges; columellar margin dilated, flat, 

 callous, shining. Length 9, breadth 5 mill. 



Auricula nigra, Philippi, 31SS. 



Kiist. Auric. Inch fasc. 30. 

 Auricida marinella, "King" Kiist. Auric, p. 24. t. 3. f. 4, 5. 



Jay, Cat. 1850, p. 265. n. 6517. 

 Marinula marinella, " King,' 1 ' 1 H. and A. Adams in Proc. Z. S. 



1854, p. 35. n. 3. 

 Marinula nigi-a, Pfr. Syn. Auric, n. 61 ; Hon, Auric, p. 61. 



PL. and A. Adams, Gen. rec. Moll. ii. p. 247. 



0. Larger ; length 10, breadth 6 mill. 



y. With the spire a little more produced, and the whorls more 

 convex. 



Auricula Callaoensis, Petit, 3ISS. 



Marinula Callaoensis, H. and A. Adams in Proc. Z. S. 1854, p. 35. 

 n. 4 ; Gen. rec. Moll. ii. p. 247. 



Hob. Isle of Chiloe (Philippi) ; Tristan d'Acunha (H. Cuming). 



4. Maeintxa patttla. B.M. 



Shell imperforate, fusiformly ovate, solid, almost smooth, 

 very minutely striated, slightly shining, fulvous ; spire convexly 

 conic, rather mucronate ; suture impressed ; whorls six, mode- 

 rately convex, increasing gradually, the last forming nearly 

 two-thirds of the total length, little attenuated at base ; aper- 

 ture oblique, obversely ear-shaped, of the same colour within ; 

 parietal plaits two, of which the upper one is strong, lingui- 

 fomi, widely entering, the other smaller, rather transverse, ap- 

 proximate to the columellar plait, which is small and slightly 

 twisted ; peristome simple ; right margin acute ; columellar 

 margin flat, dilated, callous. Length 10^, breadth 6 mill. 



Melampus patulus, Lowe in Zool. Journ. v. 289. 

 Pedipes ovulus, Ferussac, Prodr. p. 109. n. 3 ? 

 Pythia patula, Beck, Ind. p. 105. n. 14. 



Marinula patula, H. and A. Adams in Proc. Z. S. 1854, p. 35. n. 2 ; 

 Gen. rec. Moll. ii. p. 247. 

 Pfr. Syn. Auric, n. 02; Mon. Auric, p. 62. 



