328 Proceedings of the Royal Physical Society. 



XXIII. The Echinodermata of the Firth of Clyde. By J. E. 

 Henderson, Esq., M.B., F.L.S., Professor of Biology, 

 etc., in the Christian College, Madras; Fellow of the 

 University of Madras. 



(Read 15th December 1886.) 



[A manuscript, consisting of notes on the occurrence of 

 Echinodermata in the Firth of Clyde, was put into my 

 hands in November 1885 by my friend. Professor J. K. 

 Henderson, with the request that I would revise the names 

 and communicate the paper for him to this Society. The 

 notes were compiled from observations made duriug the 

 dredging operations of the yacht " Medusa," of the Scottish 

 Marine Station, in the estuary of the Clyde, during the summer 

 of 1885, and were supplemented by information communicated 

 to Professor Henderson by other naturalists. Last winter I 

 was unable to finish the preparation of these notes for publica- 

 tion, but have now revised the nomenclature as follows : — 

 The names of the Crinoidea are those given by Dr Norman in 

 his paper " On the Genera and Species of British Echino- 

 dermata;"^ for the Ophiuroidea, I have followed Mr W. E. 

 Hoyle's " Eevised List of British Ophiuroidea," in Vol. VIII. 

 of the Proceedings of this Society ; for the Echinoidea, I have 

 followed the nomenclature of A. Agassiz in his revision of 

 the Echini; and for the Holothuroidea, Dr Hjalmar Theel's 

 recently published Synopsis has been taken as the standard ; 

 while Mr W. P. Sladen has been Qood enough to correct the 

 names of the Asteroids. The notes of the habitats have been 

 left unaltered. 



Professor Henderson's chief attention, during his work on 

 the Clyde in 1885, was devoted to the Decapod and Schizopod 

 Crustacea ; and the results of his study of the distribution of 

 those groups are recorded in a paper ^ published by the 

 Natural History Society of Glasgow.— J. T. Cunningham.] 



1 Ann. Mag. Nat. Hist, ser. 3, vol. xv., 1865. 



2 " The Decapod and Schizopod Crustacea of the Filth of Clyde," by J. R. 

 Henderson, M.B., F. L.S Published by the Natural History Society of Glas- 

 gow, 1886. 



