Class VL ANOMIA. ANOMIJ. 253 



Adheres to oysters, crabs, and lobsters, and 

 shells. 



Gm. Lin. 3346. Mont. Test. Br. 157. *• 4. 3. aculea- 



Lin. Tr. viii. 103. ^ /. 5. TA ' 



* A. with a somewhat orbicular spiry shell; 

 beak smooth, bending downwards ; diameter 

 three-eighths of an inch. 



Found in Devonshire, Cornwall, and Red- 

 wharf ba.y Anglesey. 



Gm. Lin. 3346. 



Mont. Test. Br. 153. 157- 



4. UNDU- 



Lin. Tr. viii. 103. 



t.4.f.6. 



LATA. 



# A., shell with a crenated margin ; the evener 

 valve very thin and smooth, having a large oval 

 perforation ; the convex valve has longitudinal 

 waved stride, transversely decussated by others 

 which are curved. 



In the sea, attached to shells. 



Lin. Tr. viii. 104. t. 3. /. 6. Mont. Test. Br. Sup. 64. 5. cymbi- 



FORMIS. 



* A. with an oblong shell, rough, somewhat 

 striated; the beak incurvated; flatter valve 

 perforated. 



Discovered by Mr. M'Leay on the coast of 

 Caithness- shire. 



