52 THE INVERTEBRATE FAUNA 
PINNOTHERID&. 
Pinnotheres pisum (Penn.). 
Firth of Forth (Z‘B.). 
Not uncommon; we generally found it in 
the pallial chamber of MJodiola modiolus. 
We have dredged it off Longniddry in 14 
fathoms, and elsewhere. 
LEUCOSIADA. 
Ebalia cranchii (Leach). 
Firth of Forth, rare (HZ. D. S. G.). 
CORYSTIDA. 
Atelecyclus septemdentatus (Mont.). 
Firth of Forth (#d. Mus.); Firth of Forth, 
rare (H. D. S. G.); Portobello beach (/‘B.). 
The A. heterodon of Leach. This species 
seems to be a very favourite food of the cod. 
Dr J. A, Smith has recorded it from the 
stomach,* and we have found it in the 
same situation. 
Corystes cassivelaunus (Penn.). 
Firth of Forth (Zd. Mus.) ; Off Inchkeith 
(MB.); Bass Rock, 24 fathoms (Metzger) ; 
Aberlady Bay (Com. Mar. Zool.); New- 
haven (C. W. 'P.). 
Generally distributed: we have dredged 
it in Aberlady Bay, 5 fathoms, and in 
Kirkcaldy Bay, 9 fathoms. 
TUNICATA. 
There is practically no literature on the Tunicata of the 
Firth of Forth. Comparatively few naturalists have worked 
at this interesting but obscure group, while amateurs, to 
whom we are so often indebted for valuable contributions to 
local faunas, invariably fail us when we come to the Ascidians. 
The number of species recorded from the Firth of Forth is 
* Proc. Phy. Soc., vol. iii., p. 214. 
