153 
suture to the keel, marked with numerous fine decus- 
sated arched longitudinal ribs which are coarser above 
than below; under side with a central cavity from 
which the whorl extends a little convex to the keel ; 
aperture suborbicular, outer lip thin, the inner reflected. 
In shell sand at Noss Zetland, after a storm. 
Grenus.—VELUTINA. 
Aperture circumseribed, no pillar, body-lip oblique. 
V. Lavieata. F. p. 326.—Hetrx L. Lin. 1250. 
—Don. 3. t. 105.—Walk. f. 17.—Pen. 4. t. 86. f. 
139.—Mont. p. 382. and Sup. p. 140.—Lin. T. p. 
222.—Dor. Cat. p. 56. t. 18. f. 9.—D. p. 971.— 
Thin, fragile, imperforate, subpellucid, flesh-colored, 
with eight volutions, the body whorl extremely large, 
the others very small very little produced and lateral ; 
apex compressed ; transversely wrinkled and slightly 
striated longitudinally or spirally, covered when fresh 
with a rough brown epidermis which generally rises 
into regular equidistant membranaceous spiral ridges; 
aperture suborbicular, dilated, margin thin. 0,60. 
Shellness and Devon. 
V. Otts. F. p. 326.—Herx Ors. Turt. D. p. 70. 
~=(Walk.t.1.f. \7)-—Semitransparent, glossy, whorls 
G3 
