OF THE FIRTH OF FORTH. 19 
ECHINODERMATA. 
In this list the Crinoidea are omitted, as no specimen of this 
group has hitherto been found in the Firth. Antedon rosaceus, 
which is extremely common on the west coast of Scotland, 
may yet be found within our limits, as its area of distribution 
seems to extend round the northern coast ; and Mr C. W. Peach 
has recorded it off Peterhead. Antedon sarsii, a northern 
species, may be looked for in the seaward limit of the Forth. 
In the list of Ophiuroidea the arrangement and nomenclature 
of Professor Lyman, as given in his “ Ophiuride and Astro- 
phytidee,” * has been followed; and in the Asteroidea, Professor 
Ed. Perrier’s arrangement, used in his “ Révision de la Col- 
lection de Stellérides du Muséum d’Histoire Naturelle de 
Paris.” For the Echinoidea, we have followed Professor 
Alexander Agassiz’ nomenclature, as given in his “ Revision 
of the Echini.” + 
Much work must still be done in the investigation of the 
Holothuroidea of the British Seas before they are properly 
understood, and the list of the Forth species of this group, 
which we give, is that which we now regard with least satis- 
faction. Although from time to time a considerable number 
of species of Holothurids have been obtained in the Forth, the 
group is very poor in individuals, so that specimens for com- 
parison are rarely obtained. 
We have obtained the greatest assistance in the prepara- 
tion of this list of Echinodermata from the works above men- 
tioned. Also from Professor Edward Forbes’ “ History of 
British Starfishes,” and from the Rev. A. M. Norman’s valu- 
able paper on the “ Crinoidea, Ophiuroidea, and Asteroidea of 
the British Seas.” § Although not always adopting the no- 
menclature of Professor Forbes, we have in every case given 
the names used by him in his description of Echinoderms, as 
his work is in the hands of every student of the group. 
* Mem. Mus. Comp. Zool., Cambridge, Mass., 1864. 
+ Archives de Zoologie Experimentale, 1875. 
+ Mem. Mus. Comp. Zool., Cambridge, Mass., 1874. 
§ Ann. and Mag. Nat. Hist., 1865, p. 98. 
