THE INVERTEBRATE FAUNA 



rori) ; Bass Kock, 24 fathoms (Metz. and 



Mey., as Cultellus pellucidus). 

 Solen ensis (Linn.). 



Firth of Forth (APR, and Ed. Mus). 



We have taken Solen ensis frequently. 

 S. siliqua (Linn.). 



Firth of Forth (MR, and Ed. Mus.). 



We dredged it lately west of Inchkeith, in 



4 fathoms. 

 S. siliqua, var. arcuata. 



Newhaven shore (M.). 



ANATINID^E. 

 Thracia prcetenuis (Pult.). 



Firth of Forth (M'R, and F. and &.). 

 T. papyracea (Poli). 



Firth of Forth (Ed. Mus., and M'R). 



We have taken this species frequently at 



Portobello, Cramond, etc. 

 T. convexa (W. Wood). 



Firth of Forth, dead shells (M'R). 



Single valves not unfrequent on the 



shore near Edinburgh, at low water, 



especially towards Cramond Island (Ml). 

 T. distorta (Mont.). 



Firth of Forth (F. and ff., and MR). 



CORBULlDiE. 



Necera cuspidata (Olivi). 



Off Portseaton and Fidra, 17 fathoms 

 (Thomas') ; Firth of Forth (F. and ff., and 

 M'R). 



Corlula gibla (Olivi). 



Firth of Forth (Ed. Mus., M'R, and F. 

 and H.). 



Single valves are frequent on the shores 

 at North Berwick, Newhaven, Gran ton, 

 and South Queensferry. I have taken a 



