123 

 PATELLA striata. 



TAB. CCCLXXXIX. 



Spec. Chas. Oblong, irregularly conical, with 

 numerous acute radii ; umbo forward, sharp. 



IvEMARKABLE for depth and a slight obliquity of form, the 

 radiiareslender,numerous,irregularlylargeandsmalI,and 

 interrupted by the lines of growth; the sides of the shell 

 are often bent inwards, as if by pressure between the 

 sides of a hole or crack in stone ; in which case the 

 length is double the width ; young shells are nearly flat, 

 they grow high as they encrease in size ; and that some- 

 times without growing either longer or wider, thus ac- 

 quiring a columnar form : the inside at the same time, is 

 filled up towards the umbo. The apex is sharp, bent a 

 little towards the front. 



A single, but uncommonly large specimen of this 

 Patella was foundin 1819, at Stubbington, by Jas. Hol- 

 loway Esq. in the same clay that produced the Cerithium 

 Cornucopia. It is very abundant at Hauteville, in 

 Normandy, but generally only half as large. I have 

 received many specimens through the kindness of Mons. 



