164 
SOLEN. RAZOR-SHELL. 
12. Solen diclivis. Sloping Razor-shell. Fig. 80. 
Lister , pi. 421. p. 265. 
Shell oblong, thin, semitransparent, white with a mix-' 
turd of reddish white towards the ends, covered with a 
dark brown skin, irregularly striate or wrinkled trans¬ 
versely, rounded and oT nearly equal diameter at both ends, 
considerably declining from the beaks on both sides to¬ 
wards the back margin, but more so at the cartilage end 
where there is a slight indenture under the beak: the front 
margin quite straight and even: beaks nearly central, 
small, pointed; inside white polished: teeth strong, two 
in each valve, one of them concave, and in one valve one 
of them is much divaricated ; under the cartilage is also a 
strong prominent gibbosity extending beyond the margin: 
length three-quarters of an inch ; breadth two inches. 
Two specimens of this Species, so eminently distinct 
from all which have been previously described, both in the 
slopes, teeth, and perfectly straight front margin, we ob¬ 
served in the cabinet of Mrs. W. C. Loscombe of Exmouth, 
who obligingly favored us with one of them: they were 
found in Sciliy. v.m. t 
Lister’s figure is an excellent one, which Gmelin has 
quoted for S. Cultcllus; but it is so veryunlxke the figures 
which Mr. Wood has given of that shell, that both himself 
and Mr. Dillwyn have omitted it. 
13. Solen squamosus. Scale Razor-shell . 
Montagu, p. 565. 
Shell nearly orbicular, very flat thin and transparent, 
white, most minutely punctured all over, with a few con¬ 
centric ridges especially about the margin ; inside smooth 
glossy white, with obscure strim radiating from the hinge, 
and rather more opake at the margin: beaks small, pointed, 
central, not inclining to either side : teeth two, erect, di¬ 
verging each side, extending beyond the margin, a depres¬ 
sion or furrow on the margin dividing each tooth into two 
plates almost to the beak where they arc united and form 
an acute angle : length four lines ; breadth half an inch. 
Qne^ valve only of this*singular shell was found by Mon¬ 
tagu, in Salcombe bay, who observes that it was as clear 
and pellucid as the Bulla aperta, and resembled i\ fish scale. 
STROMBUS. 
