TURBO. TURBAN. 
2 13 
49. Turbo margin at us. Margined Turban. 
Laskey, JFcrn. Soc. i. pi. 8. f. 13. 
Shell somewhat cylindrical, very strong, white, obtuse : 
? Vi res six, with numerous longitudinal ribs which are con¬ 
tinued over the separating line, and finely striate circularly: 
sperture oval; the outer-lip extremely thick, and rounded 
b a rib at the back: length three-eighths of an inch ; 
breadth a fourth of its length. 
It differs from T. reticulatus, in its size and much more 
slender shape, and in the longitudinal ribs crossing the line 
of junction. 
At Guernsey : very rare. 
50. Turbo striatus. Striated Turban. 
Linn. Trans, iii. pi. 13. f. 25, 2G— 1 Valuer, f. 49. 
Shell cylindrical, slender, often elongated and^ curved, 
moderately pointed, transparent, glossy-white, with often 
pile ferruginous marks, sometimes entirely of a pale rust 
color, covered when fresh with a brown skin : spires six, 
rounded and well defined by the separating line, covered 
with numerous extremely fine transverse striae, which are 
sometimes worn down so as to give the shell a polished ap¬ 
pearance, and faintly ribbed longitudinally on the upper 
part of some or all the volutions, which often form a slight 
bead-work round the line of junction: aperture roundish- 
oval, margined ; the outer-lip thin ; inner-lip not reflected : 
length above the tenth of an inch; breadth a third of its 
length. 
On sea weed, and in drifted sand. v. v. 
51. Turbo coniferus. Conic Turban. 
Montagu, pi. 15. f. 2 —Dorset Cat. pi. 19. f. 6. 
Shell white, strong, taper, rather obtuse at the point: 
spires six, flat hut well defined by the separating line, with 
about twelve strong undulate longitudinal ribs, which at 
the junctions of the volutions have small cavities between 
them, giving the line of separation a denticulate or slightly 
beaded appearance, and continuing circularly round them ; 
the ribs crossed by very fine transverse strife: aperture 
oblique, oval, strongly margined, not reflected at the ph- 
