Mont. p.332.—Turt. D. p. 199. Somewhat conic, 
smooth, glossy, transparent ; whorls three, the body very 
large, variegated with white and bronze generally in 
bands, terminating in a small obtuse point; aperture 
somewhat orbicular, margin acute. Minute. Whitsand 
Bay, very rare. 
By the advice of several distinguished Conchologists, 
I have determined on the adoption of the genus 
LACUNA.—Turton. 
Thin, conoid or somewhat globular clothed with an epi- 
dermis. Aperture entire, roundish or oval, with the 
lips disunited at the top. Pillar flattened, with a 
longitudinal groove which terminates at the upper 
end in an umbilicus . Operculum horny. 
To this genus then will belong our Rvfa (L. Pute- 
olus) (fide Turton) Natica. Pallidula, Lacuna Turbo, 
Quadrifasciatus, Vinctus and Crassior. 
Lacuna Fascrata Macg. Ab. p. 145.—Hewix F 
Mont. p. 446.—( Adams in Lin. T. 5. t.. 1. f. 20, 1. )— 
PHASIANELLA F Brown Ill. Cone. t. 46. f. 54.—Sub- 
globose, broader than long, spire depressed, of three 
very thin transparent rapidly inereasing volutions, 
