16 THE INVERTEBRATE FAUNA 
Sertularia pumila (Linn.). 
Firth of Forth (MB); Firth of: Forth 
(Ed. Mus.). 
Common between tide marks on stones, 
Fucus, etc.; in profusion at Wardie. 
S. operculata (Linn.). 
Firth of Forth (“B.); Firth of Forth 
(Colds.). 
We have found large masses of this species 
cast up on the shore between Longniddry 
and North Berwick. 
S. filicula (Ell. and Sol.). 
Firth of Forth (/B.). 
We have dredged this species frequently. 
We got it last summer in 7 fathoms near 
Inchkeith. 
S. alietina (Linn.). 
Firth of Forth (42); Firth of Forth 
(Ed. Mus.). 
Not uncommon on stones and shells from 
the oyster bank. 
S. argentea (Ell. and Sol.). 
Firth of Forth (ZB); Firth of Forth, 8 
fathoms (f/. LZ. S.). 
This species is not uncommon. We took 
it frequently last summer on old shells, 
etc., from between Inchkeith and Kirk- 
ealdy. 
S. cupressina (Linn.). 
Firth of Forth (#&.); Firth of Forth 
(R. J.); Firth of Forth (Zh.); Firth of Forth 
(Hd. Mus.). 
We have dredged this species several times 
in the Firth. 
Hydrallmania faleata (Linn.). 
Firth of Forth (Z‘B.) ; off the Bass Rock 
GEE. 8.) 
Probably the commonest Hydroid in a few 
fathoms of water off Newhaven. It occurs 
