147 
SuptruneaTA. Mont. p. 300. ¢. 10. f. 1.—Turt. 
D. no. 64.—TurRRITELLA S. F. p. 303.—Pellucid 
yellowish white, with six or seven rounded smooth 
whorls separated by a deep depressed line, gradually 
tapering to an obtuse point; aperture suborbicular, 
inclining to oval,—variety, faintly striated longitu- 
dinally, somewhat glossy. 0,20...0,05. ee 
and Salcomb in drift sand. 
Trisg.—NERITACEA. 
Fluviatile or marine, semglobular or depressed oval, 
destitute of a columella; aperture semicircular with 
an oblique straight pillar-lip. 
Genus.—NATICA. 
Subglobular, operculated, umbilicated ; aperture en- 
tire, semicircular ; imner lip oblique, toothless, 
callous ; the callosity modifying the umbilicus and 
sometimes covering tt; outer lip sharp, always 
smooth within. 
N. MoniiFrera. Lam. 16.—N. Guaucina. F. p. 
319—Pen. 4. p. 344.¢. 90. f. 1.—NeErita G.Mont.p. 
469.—IList. An. Ang. t.3. f. 10.—Inst. £.568. f. 19. 
—Da Cos. p.83.t.5. f. 7.—D. (in part) p. 978.— 
Strong, smooth, glossy, livid or purplish flesh color, 
ferruginous or chesnut about the acute apex, paler when 
G2 
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