Land, Fresh- Water, and Marine Crustacea. 103 



It will be observed from the above list that twenty species, 

 exclusive of the Diastylis, were at this time added to the 

 Crustacean fauna of the estuary. Two undescribed species 

 belonging to the Amphipoda were also found by Dr 

 Henderson in 1884, but were not recorded till 1894; ere 

 that time, however, they had been described by Professor 

 G. 0. Sars. They are entered in the present Catalogue under 

 the names of Sthenometopa rohusta (G. 0. Sars) and Param- 

 phithoe monocupis, G. 0. Sars. 



Contributions by the present Writer in the Eeports 

 of the Fishery Board for Scotland, etc. 



Although various groups of the Crustacea were receiving 

 more attention than formerly, it was not till 1888 that a list 

 of the Forth Entomostraca was published. In that year I 

 contributed a small paper to the Sixth Annual Report of the 

 Fishery Board for Scotland, entitled, "A Eevised List of the 

 Crustacea of the Firth of Forth," in which I gave the results 

 of some researches extending over the autumn and winter 

 of 1887, and these included a list of marine Entomostraca. 

 For several years thereafter, my leisure time was devoted 

 chiefly to the study of the Crustacea, and especially of the 

 Entomostraca of the Forth estuary. The work assigned to 

 me by the Fishery Board for Scotland afforded me oppor- 

 tunities for this study such as are seldom enjoyed by the 

 student, and I desire to express my great obligation to the 

 Fishery Board for the many favourable opportunities I have 

 enjoyed for prosecuting the study both of the marine and of 

 the fresh-water Crustacea of Scotland. The results of my 

 researches, under the title of "Additions to the Fauna of the 

 Firth of Forth," were published year by year in the Board's 

 Annual Eeports. The last of these papers (No. 8) was 

 published in 1896, in Part III. of the Fourteenth Eeport. 

 But though no papers have been published since 1896 dealing 

 exclusively with Forth Crustacea, records of new or rare 

 forms from the Forth have appeared occasionally in subse- 

 quent Eeports, along with the descriptions of species from 

 other parts of Scotland. Papers on the land and fresh- water 



