208 Proceedings of the Royal Physical Society. 



We have dredged this species several times, 

 last summer and previously. 



Bngida avicularia (Linn.). 



Firth of Forth {M'B). 



We dredged this species last summer to 



the west of Inchkeith in 5 fathoms. 



B. plumosa (Pallas). 



Dredged last summer. 



B. miirrayanoj (Johnst.). 



Leith and Newhaven, on the fishermen's 

 nets {B, Lanclshorough,jun.). 



Cellariid^. 

 Ccllaria fistidosa (Linn.). 



This species is common in the Forth. We 

 have dredged it frequently on the oyster 

 bank, and took it last summer in 14 

 fathoms, off Longniddry. 

 The Salicornaria farciminoidcs of John- 

 ston and others. 



Flustrid^. 



Flustra foliacea (Linn.). 



Common on the oyster hank. We have 

 taken it lately from 12 fathoms, north- 

 east of Inchkeith; 5 fathoms, west of 

 Inchkeith ; and 4 fathoms, off Aberdour. 



F. secitrifrons (Pallas). 



The Flustra trvmcata (Linn.) of Johnston, 

 Busk, and others. Leith, Dirleton, and 

 opposite the Bass Eock (Z>. Landshorough, 

 jun.) ; Portobello and Firth of Forth, 30 

 fathoms {K) ; Firth of Forth {M'B.). 

 This is a fairly common species in the 

 Forth. We have dredged it west of 

 Inchkeith in 5 fathoms, and north-east of 

 Inchkeith in 12 fathoms. 



F. carhasca (Ell. and Sol.). 



Leith (Colds.) ; Leith Shore {Mr Pctrsons) ; 



