108 THE SCOTTISH NATURALIST 



winter is passed is a point upon which we have no informa- 

 tion. The absence of the food-plant (Bryopsis) during that 

 season favours, however, the assumption that the autumn 

 eggs remain unhatched till spring. 



In the Handbook of the Fauna, etc., of Clyde (1901), 

 H. dendritica is recorded from Cumbrae. This is the only 

 previous Scottish record we have seen. 



Lamellidoris aspera, A. & H. Our first specimen of this 

 small Dorid was found on the underside of a stone at low- 

 water mark, Boglehill rocks, Longniddry Bay, 26th April 

 191 5. In the same locality two were got on 17th May 1916, 

 whilst on the following morning as many as eighteen, one of 

 which spawned later in the day, were collected there. The 

 tide on the last occasion was particularly low, thus allowing 

 examination of numerous stones lying upon muddy ground 

 on the seaward side of the rocks. On 27th May 191 5, five 

 specimens, some of which deposited spawn in the course of 

 the next few days, were obtained under stones at low-water 

 mark, Port Seton rocks ; where another was found on 3rd 

 June 1916. 



While most of the specimens met with were white, several 

 were distinctly tinged with yellow, suggestive of Adalaria 

 proximo, ; but no structural difference was detected. Owing 

 to its small size length 9 or 10 mm. L. aspera might 

 readily be passed over as a young stage of one of the larger 

 Dorids. Its presence in the Firth of Forth was quite to be 

 expected when we consider that Alder and Hancock described 

 it as common on the Northumberland and Durham coasts. 

 It has also been recorded from St Andrews, the Moray 

 Firth and the Clyde area. 



As regards the other species of Nudibranchs observed, 

 the most interesting was the minute planarian-like Linia- 

 pontia nigra, Johnst. Q = capitata, Mull.), which occurred as 

 follows : One discovered crawling on inside of glass-tube 

 containing small green seaweed (Clfldopliora), from rock- 

 pool, Port Seton, 10th September 191 5; several on Bryopsis 

 plumosa from Joppa rocks, 25th July 1916; and two on same 

 plant from Longniddry Bay, 29th July 1916. This species 

 is not in Leslie and Herdman's Catalogue of Firth of Forth 



