61 



KELLIA diibia. 

 TAB. DCXXXVJI.— /g. 4. 



Spec. ('har. Transversely elongate-oval with 

 rather straight sides, shghtly convex, smooth, 

 tender ; anterior side the smaller ; one erect 

 somewhat compressed tooth in the right valve, 

 and one obtuse lateral tooth and one minute 

 central tooth in the other valve, 



Syn. Kellia dubia, Wood, loc. cit. 247. Morris^ 

 Catal. 89. 



xLxTERNALLY smoolli, with the exception of fine lines of 

 growth ; internally fine radiating lines are seen in some spe- 

 cimens. The muscular impressions are generally obscure, 

 but one specimen shows the posterior one as subovate, the 

 other more elongated, and the impression of the mantle 

 without a sinus. This is the largest species of Kellia we 

 know ; it is subject to some variation in shape, as shown in 

 figures B. and 7. We cannot agree with Mr. Wood in 

 referring this to Psammotea dubia of Deshayes, because 

 that is a gaping shell, and has a very different hinge. It 

 is more like Erycina anodon of Philippi, vol. i. 13. t. 1. f. 20, 

 but that issaid to have a small, very obtuse sinus in the 

 pallial impression, and is smaller, with the umbo differently 

 placed. 



Both the red and coralline Crag of Sutton afford this 

 shell. 



