TRANSACTIONS 



OF THE 



NATURAL HISTORY SOCIETY OF GLASGOW 



I. 



A CONTRIBUTION TOWARDS A CATALOGUE 

 OF THE AMPHIPODA AND ISOPODA OF 

 THE FIRTH OF CLYDE. 



BY DAVID ROBERTSON, F.L.S., F.G.S. 



[Read 27th April, 1887.] 



For this contribution I have been gathering materials 

 during a number of years. In the last two summers 

 I was enabled to make a considerable advance 

 towards the end in view, having, through the 

 kindness of Mr. John Murray of the Challenge?* 

 Expedition, had the privilege of accompanying him 

 in his steam yacht Medusa, of the Scottish Marine 

 Station, Granton, during his dredging in the Firth 

 of Clyde. The tight little vessel is fitted up with 

 all modern improvements, whereby the dredging 

 work is carried on at all depths, and with the 

 greatest ease and expedition. I had the advantage, 

 moreover, of getting all the Amphipods that were 

 taken, thus adding much to the list that could not 

 otherwise have been obtained, besides throwing 

 important light on the distribution of the species 

 in different depths of water. I owe grateful thanks 

 to Mr. Murray * and to all the staff, for their kind 

 attention; also to the Rev. Canon A. M. Norman, 

 and Mr. C. Spence Bate, of Plymouth, for their 

 kind and willing help ; and to the Rev. Thomas R. 



