156 Proceedings of the Boyal Physical Society. 



Heteromysis formosa^ Smith. 

 Described by Professor Smith for the United States. I 

 noticed this species in some tow-net material collected to 

 tlie east of Inchkeith during October last year. Dr A. M. 

 Norman informs me that he procured two specimens of this 

 species at Guernsey in 1856, and that he knows of no other 

 British habitat for it than the two now recorded. This 

 species comes very near Heteromysis {Chiromysis) microps, 

 G. 0. Sars. 



COPEPODA. 



Cymhasoma rigiclum, J. C. Thompson. 



I observed two specimens of this among tow-net material 

 collected to the east of Inchkeith. Both of them, Mr 

 Thompson tells me, were females. Unfortunately he found 

 it necessary to dissect them, so that I have only the dis- 

 sected parts to exhibit. Mr Thompson has the following 

 records of its distribution, viz. : the Canary Islands, the 

 Mediterranean, Jersey (Channel Islands), Lamlash Bay, 

 Arran, Clyde, and Loch Linnhe. It does not appear to have 

 been previously noticed on the east coast of Scotland. 



II. 



(Read 20th March 1889.) 

 MOLLUSCA. 



Stilifer turtoni, Broderip. — Two living specimens found by 

 Miss Janet Carphin (grand-daughter of the late Principal 

 Cunningham) on an Echinus brought by one of the Newhaven 

 fishing boats from near the Isle of May on March last (1888). 



Clio horealis, Brug = Clione papilionacea, Pallas. — The speci- 

 men now exhibited was captured by me near Inchkeith in 

 January last. 



XVII. Notes on the Larval Stages of Motella. By George 

 Brook, Esq, F.L.S. [Plate VL] 



(Read 16th March 1887.) 



On the afternoon of September 24tli, 1886, 1 was fortunate 

 enough to meet with a large shoal of larval fishes, which 



