91 



SANGUINOLARIA compressa. 



TAB. CCCCLXII. 



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 obloDg, 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- 

 guinolaria 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-. 

 toiieusis, presented by Miss Bemiuster. 



