205 
F, Accrnotus. F. p. 350.—Murex A. Mont. Sup. 
p: 114.—Laskey Wern. Mem. 1. p. 402. t. 3. f. 14: 
— Yellowish white with an obsolete brown band (con- 
sisting of four colored lines) on the middle of the body 
whorl continuing to the apex; whorls seven, finely 
striated spirally, adorned with longitudinal ribs which 
are highest and bent in the middle; aperture oblong, 
canal short. 3...0,08. Frith of Forth, rare. 
F. Gyrinus. ff. p. 351.—Mourex G. Mont. Sup. 
p. 170.—Laskey Wern. Mem. p. 401. t. 8. f. 10.— 
Brown, strong, short, conic, and tumid ; whorls four, 
with numerous spiral rows of brown tubercles (eight on 
the body whorl three on the succeeding.) Eiaceys 
Frith of Forth. 
¥. Purpurgvs. F, p. 351.—Muvrex P. Mont. p. 
260. ¢.9. f. 3.—Lin. T. 8. p. 148.—D. p. 745.— 
Fusiform, dark purple with sometimes a few spots or 
blotches of white; whorls nine or ten, rounded. and 
tapering to an extremely fine point, furnished with 
nineteen or twenty slightly oblique ribs decussated 
by numerous sharp elevated ridges which render the 
shell extremely rough and almost cancellated; aper- 
ture narrow, oval, terminating in a straight canal ; 
outer lip thin, margin white and crenated by the strize ; 
