GENUS XV. ANOMIA. 83 



w\\h two large flat teeth, diverging and transversely 

 grooved (see Park. Organ. Rem. vol. 3. p. 172. t. 12. 

 f. 1 and 2). 

 Harp AX. An adherent oblong and somew^hat triangular in- 

 equivalved shell ; the hinge formed by two long diverging 

 crenulated teeth in one valve, and four in the opposite, 

 disposed in the form of a V ; the upper valve armed with 

 pointed hooks ; one mark of attachment (see Park. Or- 

 gan. Rem. vol. 3. p. 221. t. 12. f. 14 to 18). 



M 2 



