OF THE FIRTH OF FORTH. 33 
beach sand between Portobello and Fisher- 
row (F. £. S.). 
Nonionina depressula (W. and J.). 
Off pier, Bo'ness (7. B. B.); beach sand 
between Portobello and Fisherrow (7. £.5.). 
N. umbilicatula (Mont.). 
Beach sand between Portobello and Fisher- 
row (Ff. #. S). 
POLYZOA. 
Polyzoa are abundant in the Firth of Forth, in the coral- 
line zone, and especially on the oyster bank, where some 
species occur in profusion, and attain a large size. Notwith- 
standing this richness in specimens, the number of species 
hitherto recorded from the Firth is small, and the present 
list is probably far from complete. We believe that many 
of the smaller species will yet be found here, especially those 
formerly united under the generic title Lepralia (as used by 
Johnston in the “ British Zoophytes”). 
We have followed the nomenclature and arrangement given 
in Hincks’ recent work on the British Polyzoa.* From this 
exhaustive treatise we have derived much valuable assistance, 
especially in the identification of species and the determina- 
tion of their synonymy. 
We would tender our thanks to the veteran and well- 
known marine zoologist Mr C. W. Peach, to whom we are 
indebted for a list of the rarer species of Polyzoa which he 
has obtained from the Firth of Forth. 
Several of our species are recorded on the authority of 
Dr Kirchenpauer’s report on the Polyzoa collected by the 
German Expedition of 1872, which investigated the fauna of 
the North Sea.t These are marked (X.), 
Dr M‘Bain’s lists in “The East Neuk of Fife” have again 
contributed largely to the number of the recorded species. 
* « A History of the British Marine Polyzoa,” By Thomas Hincks, B.A., 
F.R.S. London, Van Voorst, 1880. 
+ IL. Jahresb. d. Komm. z. Untersuch. d. deutsch. Meere in Kiel, 
VI., Bryozoen. Berlin, 1874. 
