69 



and therefore might have been supposed to be different; I 

 have quoted it upon the authority of my brother, who has 

 seen the specimen described by Lamarck. The Mija orbi- 

 cularis, a recent Devonshire shell first described by Mon- 

 tague, is quoted by Philippi as much like his Bomia injiata, 

 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. 



KELLIA orbicularis. 



TAB. DCXXXVIL— /g^. 2. 



Spec. Char. Orbicular, oblique, tumid, with a 

 slight ridg-e, concentrically striated, rug-ose, 

 anterior side largest; only one tooth close to 

 the beak in each valve ; muscular impressions 

 large, elongated. 



Syn. Kellia orbicularis. Wood, be. cit. v. 6. 247. 



Ihis 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. 



