16 



GENUS ANATINELLA. Sow erby . 

 GENUS MYOCHAMA. Stutchbury. 

 321 Anomioides, Stutch., Sydney, N. S. W., Zool. Jour., v. 5, pi. 42, f. 1-4. 



CLASS. TROPIOPODA. 

 ORDER. BIMUSCULOSA. 

 FAMILY OS TEODE S M AT A. 



GENUS OSTEODESMA. D 6 S h d y 6 S . 



Lyonsia, Turton. 



322 Corbuloides, Desh., 



323 " var., 



Great Britain, 

 Ireland, 



W. G. C., pi. 18, f. 4, 5. 

 Turt. B. B., pi. 3, f. 6, 7. 



324 cuneata, Gray, 



325 elongata, Gray, 



326 hyalina, Conrad, 



Amphidesma Corbuloides, Lam. 

 Mya Norvegica, Gmel. 

 Mya striata, Mont. 

 Lyonsia striata, Turt. 



Spicil. Zool., pi. 3, f. 14. Anatina cuneata, Gray. 



Iquiqui, 



Mediterranean, Hanley's Spec., pt. 1, p. 25. 



New York, Conr. M. C., pi. 11, f. 2. 



327 Leana, 



pretenuis, 



GENUS COCHLODESMA. CoutflOUy. 



Conrad, 

 Pennt., 



New York, 

 England, 



Jour. Ac. N. S., 6, pi. 1 1, f. 11. Anatina Leana, Conrad. 

 Turt. B. B., p. 48, pi. 4, f. 4. is Ligula praetenuis, Mont. 



328 praetenuis, 



GENUS LIGULA. Montague. 



Mont., Torbay, Chenu, pi. 1, f. 1. 



Mya prsetenuis, Mont. 



GENUS p E R i p L o M A . Schumacher. 



329 angulifera, 



330 argentaria, 



331 inaequivalvis, 



Phil., Galveston, 



Conrad, California, 



Schum., 6 Brazil, 



Zeitsch Malak, 1847, p. 73. 



Jour. Ac. N. S., 7, pi. 18, f. 9. 



Schum. C., pi. 5, f. 1, O, b. Anatina trapezoides, Lam. 



