59 
and therefore might have been supposed to be different; I 
have quoted it upon the authority df my brother, who has 
seen the specimen described by Lamarck. The Mya orbi- 
cularis, a recent Devonshire shell first described by Mon- 
tague, is quoted by Philippi as much like his Bornia injlata , 
which is found both recent and fossil in Sicily, and agrees 
in description perfectly with our shell, an inhabitant of the 
coralline Crag of Sutton, and also of the pleistocene beds 
at Largs. 
KELLI A orbicularis. 
TAB. DCXXXVII. — -jig. 2. 
Spec. Char. Orbicular, oblique, tumid, with a 
slight ridge, concentrically striated, rugose, 
anterior side largest; only one tooth close to 
the beak in each valve ; muscular impressions 
large, elongated. 
Syn. Kellia orbicularis. Wood, loc. cit. v. 6. 247. 
T. his shell is retained in the genus Kellia , although it 
does notpossessall the characters originallyrequired, having 
but one tooth in each valve. The exterior has an apparent 
twist which gives it a slight obliquity, and the ventral mar- 
gin nearly straight, consequently the disc a little flattened. 
The shell is exceedingly gibbose, the depth of each valve 
being equal to half its length. It somewhat resembles the 
preceding, but it differs in its dentition.” From the coral- 
line Crag, Sutton. 
