21G 
TURBO. TURBAN. 
It is known from the T. interstinctus, by the want of the 
small tooth on the pillar, and the punctures or transverse 
lines between the ribs. 
Found in the Boysian cabinet. 
F. Tapering, not cross-barred nor reticulate , 57 to G6. 
57. Turbo duplicatus. Doable-ribbed Turban. 
Lister, pi. 591. fig. 58— Pennant , pi. 84. f. 3— Donovan, 
pi. 112— Da Costa, pi. ti. f. 3. 
Shell taper, whitish or greyish horn-color, with fourteen 
or fifteen spires, each furnished in the middle with two 
rather remote prominent acute spiral ridges, and finely 
striate longitudinally in the interstices : aperture some¬ 
what oval: length t\yo inches and a half- breadth not half 
an inch. 
At Scarborough, by Lister; and is said to have been 
lately discovered on the western coasts, by Dr. Leach ; very 
rare. 
58. Turbo exoletus. Marbled Turban. 
Lister, pi. 592. f. 60-Da Costa , pi. 7* f. 8 . 
Turbo cinetus. Donovan, pi. 22. f. 1. 
Shell taper, pointed, white or tinged with purple, and 
marbled with chesnut-brown, generally in longitudinal 
waved streaks : spires twelve or fourteen, rather raised 
and separated by a deep line, obscurely striate circularly, 
with two raised obtuse spiral ridges in the middle of each, 
and placed near together : aperture orbicular; length two 
inches and a half; breadth five-eighths of an inch. 
Kent, Lancashire, and Lincolnshire : very rare. 
0 59. Turbo Terebra. Screw Turban. Fig. 83. 
Lister, pi. 591. f. 57— Pennant, pi. 84. f. 4 —Da Costa, 
pi. 7- f. 5, 6—Donovan, pi. 22. f. 2 —Dorset Cat. pi. 15. 
f. 5, 6 . 
Shell long, tapering to a fine point, light brown, rufous, 
cream-color, or of a leaden hue: spires from twelve to 
sixteen, mostly well rounded and deeply defined by the se¬ 
parating line, but sometimes rather fiat, faintly wrinkled, 
and marked with numerous fine circular striae, some of 
which 
