40 THE INVERTEBRATE FAUNA 
shells. We have also taken it at low 
water on Cramond Island. 
Alcyonidium hirsutum (Flem.). 
On Fucus serratus, Firth of Forth (MB) ; 
Entrance to Firth of Forth, 30 fathoms 
(Z): 
We dredged this species last summer off 
Aberlady Bay in 9 fathoms. 
A, mytili (Dalyell). 
We have taken this species in the Firth. 
A, parasiticum (Flem.). 
Firth of Forth (B.); Firth of Forth 
(Hd. Mus.) ; entrance to Firth of Forth, 
30 fathoms; Firth of Forth, 24 fathoms ; 
Bass Rock, 24 fathoms (X‘). 
We have obtained this species north- 
east of Inchkeith, 12 fathoms; west of 
Inchkeith, 5 fathoms; off Aberlady Bay, 
9 fathoms; Kirkcaldy Bay, 9 fathoms ; 
off Aberdour, 5 fathoms; and frequently at 
Newhaven, It is common Nthe Firth. 
A, polyoum (Hassall). 
Firth of Forth (/B.). 
The Sarcochitum polyoum of Johnston 
and others. 
FLUSTRELLID&. 
Flustrella hispida (Fabr.). 
On Fucus serratus, Firth of Forth (JL/B.). 
Common on Fucus at low water mark, 
Aberdour. 
VESICULARIIDA. 
Vesicularia spinosa (Linn.). 
Firth of Forth (/B.); Leith shore (D. 
Landsb., jun.). 
We have dredged this species in abund- 
ance west of Inchkeith in 5 fathoms, and 
have obtained it frequently from the 
dredges at Newhaven. It is often found 
