A REVISED LIST OF THE CRUSTACEA OF THE FIRTH OF 
‘FORTH. By Tuomas Scort. 
In 1880-81 a list of the Invertebrate Fauna of the Firth of Forth was 
published by Leslie and Herdman in the Proceedings of the Royal 
Physical Society of Edinburgh,* in which were enumerated all the species 
of Crustavea belonging to the Cirripedia, Amphipoda, Isopoda, Cumacea, 
Schizopoda, and Decapoda, then known to occur in the estuary, but 
leaving out the Copepoda and Ostracoda. 
In December 1884, Professor J. R. Henderson, in a paper read before 
the same Society,+ recorded several additions to Leslie and Herdman’s 
list, the Entomostraca being again left out. Professor Henderson, how- 
ever, expressed the hope that he would yet be able ‘to form lists of these 
“more minute, though not the less interesting organisms ;’ but this hope 
does not appear to have been realised. 
Seeing that the Entomostraca, and especially the Copepoda, form such 
an important part of the food of certain fishes, it is rather surprising that 
they should have been passed over from time to time by local naturalists. 
_ During the latter half of 1887 I was at various times engaged on 
board the ‘Garland,’ assisting in collecting data required in connection 
with the trawling experiments carried on under the direction of Professor 
Ewart and Sir James Maitland, Bart. Excellent facilities were thus 
afforded for gaining a knowledge of the variety and distribution of the 
fauna of the Forth, and, acting on the instructions of Professor Ewart, 
a record was made of all the organisms observed, including the Copepoda 
and Ostracoda ; and as further additions to the lists of Crustacea already 
published have also been made, I propose in the following paper to give a 
record of the species of Crustacea now known to occur in the Forth 
estuary—the parasitic Copepoda (fish-lice) excepted, which will be dealt 
with in a separate paper later on. 
It will be understood that this record is not to be considered ex- 
haustive ; the Forth will have to be more thoroughly investigated before , 
the preparation of an exhaustive list can be attempted. Meantime, in 
order to make this one as complete as possible, several species recorded 
in the papers previously referred to are included, though they have not 
yet been observed during the Board’s investigations, and some addi- 
tional stations for a few of the rarer forms have also been added on 
the same authority. In preparing the list of Copepoda the classi- 
fication and nomenclature adopted by Dr G. 8. Brady in his mono- 
graph t have been followed. For the Ostracoda, the British Entomostraca, 
by Dr Baird, and various lists by David Robertson, F.L.S., and others, 
have been consulted. The valuable monograph of the British Sessile-eyed 
Crustacea, by Bate and Westwood, is still the standard work on the 
British Amphipoda and Isopoda ; but as within recent years considerable 
changes have been made in the nomenclature of these groups, it has 
been thought advisable to follow that adopted in Part III. of the 
Museum Normanianum,— a series of catalogues which are being published 
for private distribution by the Rev. Canon Norman, D.C.L, F.L.S. 
Advantage has also been taken of these catalogues to correct the nomen- 
clature of the other groups. The Aritish Stalk-eyed Crustacea, by 
Professor Bell, the Popular History of British Crustacea, by White, and 
other works, have also been consulted. I wish also to acknowledge 
* Proc. Roy. Phys. Soc. Edin., vol. vi. pp. 215, 313 (1880-81). 
+ Proc. Roy. Phys. Soc. Edin., vol. viii. p. 307 (1883-85). 
+ British Copepoda, 1878-80. 
