116 Proceeding's of the Royal Physical Society. 



Marionina semifusca (Clap.). 

 In small colonies under stones on the south shore of the Firth of Forth, 

 at Dalmeny, Linlithgowshire, 30th Aug. 1907 ; also under rotting fuci west 

 of Granton, March 1910. Claparede's specimens were found in Skye. 1 In 

 Ireland Southern finds it commonly round Dublin Bay. 



Lumbricillus verrucosus (Clap.). 



Pachydrilus verrucosus, Beddard in Proc. Roy. Phys. Soc, vol. x. p. 101 (1889). 

 Specimens of this seemingly common British littoral form have been 

 identified from the following places on the shores of the Firth of Forth, as 

 mentioned in my paper in the previous volume of the Society's Proceedings, 

 (xvii. p. 31): — 



Dalmeny, under stones on mud between tide-marks, Aug. 1907; Aberdour, 

 Fife, among stones and sand under rotting seaweed at high-water mark, 

 Aug. 1907, and between tide-marks, May 1910. 



Lumbricillus evansi, Southern. 



This recently described species 2 is no doubt common on the shores of 

 the Firth of Forth. When drawing up his description, Mr Southern had 

 before him specimens found by me on 22nd Aug. 1907, among stones and 

 gravel beneath rotting seaweed (fuci, etc.) at high-water mark, on the Fife 

 coast west of Aberdour, where it was again plentiful on 5th March 1910. 

 On the Haddingtonshire coast, I found it in abundance under stones in a 

 muddy bay east of Dunbar, on 8th May 1909 (specimens determined by 

 Southern). Has been taken also at Dublin Bay and Isle of Man. 



Lumbricillus fossarum (Tauber). 



This is another form which was detected among the Enchytrpeids got 

 under decomposing wrack at Aberdour in Aug. 1907. 



Mesenchytraeus celticus, Southern. 



In leaf mould on roadside south of Aberdour, Fife, 15th Feb. 1908, 



several mature specimens. These along with others taken near Montpelier, 



Co. Dublin, in Dec. 1907, supplied the material for the description of the 



species. 3 



Enchytrseus albidus, Henle. 



Abundant under rotting seaweed on both sides of the Firth of Forth ; 4 also 



1 Mem. Soc. Geneve, xvi. p. 76, 1861. 



2 Southern, Inm. ("it., p. 151. 



3 Southern, torn, cit., p. 155. 



4 W. "15 vans, Proc. Roy. Phys. Soc, xvii. p. 31. 



