OF NORTHUMBERLAND AND DURHAM. 141 
the tentacles and margin of the mentwm, which are of a deep 
golden yellow. The liver, as seen through the shell, is green in 
. distorta, and purplish in #. polita. 
2. H. wrneata, Sow. 
Helix subulata, Mont. Test. Brit. Supp. 142 (small variety). 
Rissoa subulata, Johns. in Berw. Club Proe. i. 272. 
In shell-sand, rather rare, One specimen alive from the boats 
at Cullercoats—J. A. One live and two dead specimens were 
dredged by Mr. R. Howse, off Whitburn. 
The animal is white with two long subulate tentacles, ap- 
proximating at the base, with the eyes immediately behind 
them. The foot extends a good deal before the head, and has a 
bilobed flap on the upper surface in front, which appears to be 
common to the genus, as we have observed it in all the British 
species. The head is seldom protruded beyond the shell, which, 
being transparent, the animal can easily see through. 
Two species appear to be included under the name of Z#. swbw- 
lata. 'The shell figured, and described by Donovan, which is 
much larger than this, and has several bands on the body 
whorl, is rare. It ought to retain the name of F. subulata, 
and is also the Melania Cambessedesii of Payraudeau. The 
smaller and much more common species has only two bands, 
placed close together in the centre of the body whorl, with oc- 
casionally a faint indication of another on the upper or lower 
margin. ‘The shell is thinner and more transparent than in the 
larger species, the whorls less oblique, the lower one a little 
more ventricose, the aperture not so much contracted, and the 
columellar margin not quite so straight. This is probably the 
species called #. lineata by Mr. Sowerby, whose name we adopt, 
though we would gladly change it to bzlineata, the better to ex- 
press its distinguishing character. A species in the British 
Museum, from Madeira, comes very near to this, but has only 
one band. 
46. SCALARIA, Lamarck. 
1. S. communis, Lam. 
Turbo clathrus, Mont. Test. Brit. 296. 
