91 
SANGUINOLARIA compressa. 
TAB, CCCCLX1I. 
Spec. Char. Compressed, twice as wide as 
long, rather smooth ; anterior side largest 
with a rounded truncation ; two obscure 
elevated rays proceed from each beak. 
A transversely oblong, flattish shell, whose anterior 
half is nearly square, and the other rounded, with an 
angle upon the upper part of its margin distant from the 
beaks ; the rays are convex externally ; there are two 
simple teeth in each valve placed nearly close together, 
and diverging a little ; the shell is thin. 
This shell may serve to connect the genera Solen, San- 
guiuolaria and Psammobia together : it belongs strictly 
to Azor of Leach, a genus that may probably be generally 
adopted at some not very distant period. 
Found in Barton Cliff, accompanied by Murex Bar 
tonensis, presented by Miss Beminster, 
