145 
PINNA lanceolata. 
TAB. CCLXXXI. 
Spec. Char Lanceolate, slightly curved, longi- 
tudinally striated, section quadrangular. 
An extremely elongated Pinna, being nearly four times 
as long as broad ; each valve is divided into two flat 
parts by a line along the middle, but whether this be the 
natural form, or the result of a fracture, as is commonly 
the case in other Pinnae, I am not certain : the curvature 
is very regular, and the shell in other respects appears 
very perfect. 
The Rev. John Juland has been so kind as to lend 
me this remarkable and I believe very rare shell ; it was 
found in Ochracious Limestone near Scarborough, 
