152 CATALOGUE OF THE MOLLUSCA 
The Z'urbo puteolus of Turton, in his “Conchological Dictionary,” 
and the Lacuna puteola of the same author, in the “Zoological 
Journal,” do not appear to be the same species. It is to the lat- 
ter that we refer our shell. 
3. L. vincta, ont. 
Turbo vinctus, Mont. Test. Brit. 307, t. 20, f. 3. 
Var. 1. Turbo quadrifasciatus, Mont. Test. Brit. 328, t. 20, 
£7, 
Var. 2. Turbo canalis, Mont. Test. Brit. 309, t. 12, f. 11. 
On sea-weeds at and below low-water mark. 
We cannot find any permanent character to distinguish these 
three supposed species of Montagu, and have therefore united 
them. The shell is extremely variable both in form and mark- 
ings. The more elongated form, both banded and unbanded 
(T. vinctus, and 7. canalis), is rare, but the short, banded va~ 
riety (7. quadrifasciatus) is abundant on the fronds of Lami- 
naria digitata, at and beyond low-water mark. 
4. L. uasrosa Lovén ? 
Shell ovate-oblong, tapering, whitish, rather solid, with five 
whorls, very slightly convex, the last occupying rather more than 
half the shell, and rounded, or very slightly carinated below. 
Outer lip a little expanded, and thin at the edge, within which 
it is thickened by a callosity which extends round the base of 
the aperture uniting with the expanded columellar margin be- 
low. Umbilical groove small. Length } inch, breadth 14 
tenths. 
Lacuna labiosa, Lovén Index Moll. Scand. 23 ? 
One specimen of this new species has occurred in sand at 
Cullercoats. The shell is thicker and more slender than JZ. 
vincta, and is somewhat intermediate between it and L. crassior. 
It agrees very well with Professor Lovén’s description, but is 
smaller, and, as we have not seen authentic specimens, we cannot 
speak with certainty of the species to which we have referred it. 
It appears, however. to be distinct from any of the other British 
Lacune. 
5. L. crassror, Jont. 
Turbo crassior, Mont. Test. Brit. 309, t. 20, f. 1. 
