﻿308 Proceedings of the Royal Physical Society. 



on 5th Oct., one about 4 inches in diameter was found in a 

 rock-pool at North Berwick. Though usually common enough, 

 this species appears to have been rather scarce in the Firth 

 this year, and the presence of these small examples so late as 

 October, suggests the possibility of them hibernatiDg in deep 

 water and reappearing in the spring. Fishermen at Dunbar 

 assured us that the trawlers occasionally get "jelly-fish" in 

 their trawls during winter, and in the 12th Eeport of the 

 Fishery Board for Scotland (part iii., p. 49), it is recorded 

 that a few Aurelia aurita were brought up in the " Garland's " 

 trawl-net near the Isle of May on 18th Jany. 1893. "It is 

 worthy of note," writes Prof. M'Intosh, with reference to 

 Cyanea and Aurelia in one of his papers from the St Andrews 

 Laboratory, "that once in January a large example [of 

 Cyanea ?] was procured by the trawl in deep water and at a 

 considerable distance from the shore — a solitary survivor of 

 the hosts of autumn." Hyperia galba was plentiful on these 

 Dunbar Aureliae. 



CTENOPHORA, 

 Pleurobrachia pileus (Fab.). 



PleurobracMa pileus , Fleming's British Animals, 1828, p. 504. 



Cydippe pomiformis, Forbes and J. Goodsir's paper "On tlie Ciliograda 



of the British Seas," Brit. Assoc. Rep. 1839, Miscel. comm., p. 85. 

 Beroe pileus^ Dalyell's Bxire and Remarkable Animals of Scotland, vol. 



ii., 1848, p. 257. 



PleuTohraehia -pileus, Schuize in Eep. German North Sea Expedition of 

 1872, Jahresh. d. Comm. z. Untersuch. d. deutsch. Meere in Kiel, 

 III., 1873, p. 139; Leslie & Herdman's Catalogue; Fish. Bd. Reps.; 

 and Evans in present vol., p. 16. 



Two specimens of this pretty little ctenophore were cap- 

 tured in Dunbar Harbour on 2nd July, and on the 11th it 

 was common ; a few were also taken there on 3rd Oct. 

 Their length ranged from 10 to 14 mm. On 14th Dec. the 

 finest example we have seen was secured in Burntisland 

 Harbour — its length is 30 mm. Vanhoffen, in " Nordisches 

 Plankton " (xi., 1903), puts the maximum at 25 mm. From 

 the Kev. J. Waterston we received a small specimen (about 

 5 mm.) taken near Inchcolm early in June. 



P. pileus is a common species in the Firth of Forth, 



