123 
PATELLA striata. 
TAB. CCCLXXXIX. 
Spec. Char. Oblong, irregularly conical, with 
numerous acute radii; umbo forward, sharp. 
Remarkable for depth and a slight obliquity of form, the 
radiiare slender, numerous, irregularly largeand small, 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 found in 1819, at Stubbington, by Jas. Hol- 
loway Esq. in the same clay that produced the Cerithium 
Cornucopia. It is very abundant at Mauteville, in 
Normandy, but generally only half as large. I have 
received many specimens through the kindness of Mons* 
