96 MYA. 



half long, of a pale yellow without, and milk-white 

 within; it resembles an Area, and is rather flattish 

 before. It is obtuse on the fore part, and rather sharp 

 behind. 



Inhabits the North seas, and is found among Algte, 

 and other marine substances. 



TOOTHLESS GAPER. 



9. Mya edentula. M. testa striata, ovali, eequivalvi, ample hiante ; car- 

 dine edentulo. Linn. Gmel. p. 3220. Pall. Iter 2. p. 700. 

 Shell striated, oval, of equal valves, gaping widely ; hinge without teeth. 



This species is about an inch long, thin, white, rather 

 worn, with about thirty-three striae on each valve, 

 which are farther apart at the shorter end than at 

 the other : the hinge has a thickish reflex lip. 



PITCHY GAPER. 

 PL 22. /. 5. Dr. Coombe. 



10. Mya picea. M. testa crassa, oblonga, utrinque hiante, epidermide 

 nigra superinduta ; cardine edentulo. 



Shell thick, oblong, gaping at both ends, and covered with a black epi- 

 dermis ; hinge without teeth. 



Mya siliqua. Chemn. Conch. 11. pi. 198. f. 1934. 



A strong oblong shell, decorticated about the hinge, 

 and covered with a friable coat as black as pitch, which 

 easily separates from the surface of the shell ; inside 

 bluish white, the cavity in each valve more or less filled 

 with a deposition of extraneous testaceous matter; 

 valves united by cartilage, and gaping greatly at both 

 ends. 



