﻿President's Address. 



15 



keenly interested in this fascinating but difficult group of 

 animals, drew up their lists of Firth of Forth Invertebrates, 

 they were able to catalogue 109 forms of Coelenterata 

 (including Ctenophora These they arranged as follows : — 



Since the date of that Catalogue, 1881, 10 additional 

 marine species have been recorded by Dr Henderson, Dr 

 Scott, and Mr Pearcey, as detailed below. Grouped as 

 above, they are : — Hydroida, 7 ; Acalepha, 1 ; Zoantharia, 2. 

 In 1890 I found a Lucernarian [Haliclystus auricula, I 

 believe), one of the sedentary Scyphozoa, near North Ber- 

 wick ; and a third Ctenophore has probably occurred. To 

 the first section there must also be added 2 fresh-water species, 

 namely. Hydra viridis, L., and IT. oligactis, Pall. ( =fusca, L.). 

 The former, which is in Scott and Lindsay's list of animals 

 found in the Upper Elf Loch (I.e.), is common (I have 

 obtained it from the Union Canal, Elf Loch, ponds at 

 Davidson's Mains, Winchburgh, and Largo Links, Loch 

 Leven, etc.), and I have taken the other in a pool at 

 Callander (Sept. 1906). We have thus a total of 123 forms 

 recorded, but most of the " Medusoid Gonophores " are prob- 

 ably only the sexual individuals of species included in the list 

 of '* Hydroida," in which case they will require to be deducted. 



The list of Forth Coelenterata is in need of revision in the 

 light of present-day knowledge, and a diligent worker might 

 still count on adding considerably to it. As the list shows, 

 and I can corroborate it from my own experience, the 

 Anthozoa (Sea-Anemones, etc.) and the Scyphozoa (true 

 Jelly-fish) are poorly represented in the Firth of Forth. 

 I have often examined the large Jelly-fishes cast on the 

 beach in the autumn, and never succeeded in detecting any 

 species but the common Aurelia aurita and Cyancea ca^pillata. 



^ Prof. Hickson {Cambr. Nat. Hist., vol. i.) regards the Ctenophora as a 

 separate Phylum. 



Acalepha, 



Alcyonaria, 

 Zoantharia, . 

 Ctenophora, 



Hydroida, 



Medusoid Gonophores, 



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