TURBO. TURBAN. 
201 
18. Turbo semistriatus. Half-ribbed Turban. 
Montagu, Suppl. p. 136. 
Shell thick, conic, obtuse, white or covered with a brown 
dda, sometimes faintly marked with interrupted brown 
stripes: spires five or six, slightly rounded, but well de- 
fioed by the line of separation; the terminal half of the 
larger volution and both the extremities of the other cir¬ 
cularly striate, and smooth in the middle: aperture some¬ 
what oval, angular at the inner end ; inner-lip thickened 
on the pillar: length the eighth of an inch ; breadth half as 
much. 
South of Devon : very rare. 
19. Turbo semicostatus. Half-ribbed Turban. 
Montagu , pi. 21. f. 5. 
Shell conic, short, obtuse, white, sometimes transpa¬ 
rent: spires four or five, rounded and well defined by the 
separating line; the larger ones marked with faint longi¬ 
tudinal ribs, not extending the whole length of the volu¬ 
tion, and striate transversely where these ribs terminate, 
so that the volutions are partly ribbed lengthways, and 
partly striate across; but both marks are lost on the smaller 
volutions: aperture somewhat orbicular; pillar smooth, 
slightly reflected at the lip : length half a line; breadth 
half its length. 
It sometimes resembles the Turbo spiralis ; but the vo¬ 
lutions are more rounded, the ribs are coarser, and it wants 
the fold on the pillar. 
Devonshire, and Seafield in Ireland : rare. v. m. 
20. Turbo Pullus. Spotted Turban. Fig . 45, 46. 
Da Costa, pi. 8. f. 1 and 3— Donovan, pi. 2. f. 2 to 6 —• 
Dorset Cat. pi. 14. f. 1 and 3. 
Shell oval, smooth, polished, rather obtuse : spires foul¬ 
er five, rounded and deeply divided ; the first volution very 
large: color and markings extremely variable, white or 
pale red with fine oblique crimson or purple lines which are 
sometimes undulated; sometimes it is variously blotched 
or spotted with white, or marked with longitudinal bands : 
aperture large, nearly orbicular, a little produced on the 
fore-part;pillar-lip rather spread, with often a small punc¬ 
ture 
