56 
next preceding; ribs longitudinal, elevated, interrupted' 
subacute. Aperture nearly round ; the margins circular j 
united, and terminated by a thin curved wart. 
* S. CLATHRUS. Turbo C. Tnrt. Lin. Pen. Brit. Z°-> 
vol. 4, pi. 81, fig. 111. A. Stew. Elem., vol. '> 
p. 408. Mont. Test. Brit., vol. 2, p. 290. Borlase, Nat- 
Hist. Corn., pi. 28, fig. 9. Scalaria C. Flem. Bril. An-' 
p. 310. Rare. I have obtained it from Hannafore, nea> 
Looe, and from the Land’s-end. 
* S. CLATHRATULUS. Turbo C. Tnrt. Lin. Mont' 
Test. Brit., vol. 2, p. 297. Sc. C. Flem. Brit. A»-> 
p. 311. Rare. I have only seen it from near the 
Land’s-end. 
S. TURTONI. Flem. Brit. An., p. 311. The only spe' 
cimen L have seen, and which was obtained at FalmoutlO 
differs in some respects from the description given bY 
Fleming. The length is about an inch : the lower wlior 
less inflated than in Sc. Clathrus, tapering regularly to th® 
point. Ribs twelve, flat, and of various sizes, not oohj 
tinuous across the line of separation : so that few of th*’ 
on the next whorl, are exactly opposite those of the forme' > 
and even the number on each varies. Colour pale broW» 
with two or three darker spiral bands. 
TURBINA CEA. 
The shell turreted or conoidal, aperture round or obloug' 
not dilated ; the margins disunited. When placed on the' 
base, the axis is always more or less inclined, never vertic® 1 ’ 
Journ. Science. 
TROCHUS. 
GENERIC CHARACTER: The shell conoidal, spit® 
elevated, sometimes rather depressed ; the circumfereu® 
somewhat angular, often thin. Aperture transverse 
depressed; margins disunited above. Columella arch® ' 
somewhat prominent at the base. An operculum. 
* T. ZIZIPHINUS. Tnrt. Lin. Pen. Brit. Zo., vol. pi. 
fig. 103. Borlase’s Nat. Hist, of Corn., pi. 28, fig- . 
Mont. Test. Brit., vol. 1, p. 274. Stew. Elem., vol- ^ 
p. 406*. Flem. Brit. An., p. 323. Common, near 10 
water mark. When altogether without colour, it has be,^ 
regarded as a distinct species, under the name of 
Lyonsii. -s 
T. PAPILLOSUS. T. Tenuis. Mont. Test. Brit., 1, p- 2'“ 
pi. 10, fig. 3. T. P. Flem. Brit. An., p. 323. 
I obtained two specimens from Falmouth: one of . 
with the animal, was simply conical, and of small si ^ 
the other, found on the shore dead, is about the siz®^ 
ordinary specimens of T. Ziziphiuus, and of more 
