OF THE FIRTH OF FORTH. 3 



Echinids; (3.) the Testacea, being Gastropods, Lamellibranchs, 

 and Cirripedes ; and (4.) the Sea-insects, among which we re- 

 cognise Aphrodite aculeata. Sir Eobert enumerates sixty- 

 eight species of invertebrates. Of these many can be iden- 

 tified with our commonest species ; others are more difficult 

 of recognition under their somewhat lengthy but vague pre- 

 Linnean designations. 



In 1809, Professor Jameson read to the Wernerian Society of 

 Edinburgh a paper, entitled, " A Catalogue of Animals of the 

 Class Vermes, found in the Firth of Forth, and other parts of 

 Scotland." Under the title Vermes he includes, as was usual 

 at this date, representatives of the various invertebrate sub- 

 kingdoms. Jameson enumerates seventy-seven species from 

 the Firth, among which the only Molluscs are two species of 

 Tritonia, one of Doris .said one of Chiton. He divides the 

 Vermes into (1.) Mollusca, including Nudibranchs, Asci- 

 dians, Annelids, Holothurids, and Coelenterates ; (2.) Testacea, 

 of which Chiton is the only example given ; (3.) Crustacea, 

 including Echinids, Asterids, and Ophiurids; (4.) Coralla, 

 being the Alcyonaria, Sponges, Polyzoa, and Sertularids ; 

 and (5.) Zoophyta, including Pennatula, Hydra, and Coryne. 



In the same volume of the " Memoirs of the Wernerian 

 Society," p. 370, is a paper by Captain Laskey, " An Account 

 of North British Testacea," in which he enumerates between 

 sixty and seventy species of Gastropods, Lamellibranchs, and 

 Cirripedes, obtained in the Firth of Forth. Much doubt, how- 

 ever, has been expressed by distinguished conchologists as to 

 the genuineness of many of the localities given in this paper. 



Among those who have largely contributed to our know- 

 ledge of the fauna of the Forth, Mr H. D. S. Goodsir, who 

 promised to attain to an equal scientific eminence with his 

 brother, the illustrious anatomist, must be mentioned with 

 special praise and regret. He discovered many new genera 

 and species in the Forth, to which reference will be made in 

 the text of this paper. He joined the Franklin Expedition 

 in the capacity of naturalist, and shared in its disaster. 



Many professors of the University of Edinburgh have from 

 time to time investigated the fauna of the Forth, and of these 

 Professor Jameson has already been mentioned; in more 



