16 THE INVERTEBRATE FAUNA 



Sertularia pumila (Linn.). 



Firth of Forth (M'R) ; Firth of Forth 



(Ed. Mus.). 



Common between tide marks on stones, 



Fucus, etc. ; in profusion at Wardie. 

 S. operculata (Linn.). 



Firth of Forth (MR); Firth of Forth 



(Colck.). 



We have found large masses of this species 



cast up on the shore between Longniddry 



and North Berwick. 

 S.Jilicula (Ell. and Sol.). 



Firth of Forth (M'R). 



We have dredged this species frequently. 



We got it last summer in 7 fathoms near 



Inchkeith. 

 S. dbietina (Linn.). 



Firth of Forth (M'R); Firth of Forth 



(Ed. Mus.). 



Not uncommon on stones and shells from 



the oyster bank. 

 S. argentea (Ell. and Sol.). 



Firth of Forth (MR) ; Firth of Forth, 8 



fathoms (F. K S.). 



This species is not uncommon. We took 



it frequently ]ast summer on old shells, 



etc., from between Inchkeith and Kirk- 



caldy. 

 S. cupressina (Linn.). 



Firth of Forth (MR); Firth of Forth 



(R. J.) ; Firth of. Forth (Th.) ; Firth of Forth 



(Ed. Mus.). 



We have dredged this species several times 



in the Firth. 

 Hydrallmania falcata (Linn.). 



Firth of Forth (M'R) ; off the Bass Eock 



(F. E. S.). 



Probably the commonest Hydroid in a few 



fathoms of water off New haven. It occurs 



