43 
SOLARIUM canaliculatum, 
TAB. DXXIV.— ^g. 1. 
Spec. Char. Convex, ornamented on both sides 
with granulated unequal lines ; edge promi- 
nent, crenated ; umbilicus furrowed and ere- 
nated within ; aperture round. 
Syn. Turbo. Brunder , Jigs . 7 8$ 8. 
Solarium canaliculatum. Lamarck , Env. de 
Paris , 104. Lam. Hist. Nat. 7. p. 5. 
Trochus canaliculatus. Brocchi , vol. 2. 359. 
There are three very distinct varieties of this Solarium. 
The English one, with only a few granulated ridges on 
the upper side, and the margin slightly prominent but 
relieved by a furrow on each side of it. The French va- 
riety, which has one prominent row of granules and many 
very minute rows on the upper side, the margin much 
produced and very finely crenated. And the Italian va- 
riety, of which the upper surface is beautifully orna- 
mented with many rows of conspicuous granules ; the 
margin very much produced, deflected, solid ; and so 
sharply crenated as to be almost dentated. In this va- 
riety the crenulations within the umbilicus are also very 
sharp and pointed. — The actual aperture is round in all 
the varieties, and the characters above mentioned are 
liable to some variation. 
Very abundant in the Clay at Barton Cliff. 
