47 

 Douglas bay, and north coast ; rare. 



LXVII. Amphidesma, Lam. 

 1 . tenuis. 



Amphidesma tenuis, Lam. Flem. — Ligula 

 tenuis, Mont. — Maetra tenuis, Mont. — 

 " Abra tenuis, Leach.'''' 

 In cavities of dead shells from deep water on the 

 north coast. 



LXVIII. Lucina, Lam. 



1. radula. 



Lucina radula., Lam. — Tellina radula, Mont. 

 — Venus borealis, Penn. — Venus spuria, 

 Dillwyn. 

 Test. jun. — Lucina alba, Turt. ? 

 Derbyhaven Bay, frequent. 



2. undata. 



Lucina undata. Lam. — Venus undata, Penn, 

 — Loripes undatus, Menke. — " Mysia un- 

 data. Leach.'''' (Lam.) 

 On the north coast in deep water ; not rare. 



LXIX. Cyprina, Lam. 

 1. islandica, 



Cyprina islandica. Lain. — Venus islandica, 

 Lin. — Venus mercenaria, Peiin. 

 The animal is figured by Muller. 

 On the north and east coasts, but rare, 



LXX. Maetra, La?n. 



