382 THE ZOOLOGIS'r. 
account of ‘“deck-work,” so to say, on board the ‘ Alert’ by the above- 
mentioned naturalist, who in previous contributions on southern surface 
fauna has shown much activity and capacity in this field of observation. 
The third paper was “On the Annelids of the British North Polar 
Expedition (1875-6),” by Dr. W. C. M‘Intosh. In this collection, dredged 
between 79° and 82° N., there were some eight species not found among the 
Annelids procured by H.M.S. ‘ Valorous’ in Davis Straits. All, however, 
have already been entered in the catalogue of the Arctic Fauna as obtained 
elsewhere, the majority of the species having a wide range in northern 
waters. Some even are common to the British Seas, the North Atlantic 
generally, and the Gulf of St. Lawrence. The value of the present collection 
must therefore depend on its being taken along with series from other 
localities. A critical comparison with American forms is desirable before 
clear views can be arrived at respecting the geographical distribution of 
the northern Annelids. 
A lively and interesting discussion followed the reading of these papers. 
Among the speakers were Capt. Sir George Nares, Dr. Rae, Capt. Feilden 
(who humorously related incidents of insect capture—no easy matter in these 
inhospitable regions), and the Vice-President, Dr. Gwyn Jeffreys, whose 
valuable physical researches and dredging experiences while in the 
‘Valorous,’ as tender to the Arctic ships, have already appeared in the 
Royal Society’s publications. A volume of Dr. Moss’s sketches of marine 
creatures, with maps and diagrams, illustrated the regions in question and 
the several subjects brought forward. 
December 6, 1877.—Prof. Atuman, F.R.S., President, in the chair. 
The following gentlemen were elected Fellows of the Society :—Messrs. 
J. Nugent Fitch (Newman Street, W.), J. 8. Gamble (Assist. Conserv. 
Forests, Simla), F. S. Piggott (Essex Court, Temple), A. B. Stewart 
(Roweliffe Lodge, Langside, Glasgow), and Prof. John Macoun (Belleville, 
Canada). 
Mr. Charles Stewart gave the gist of a paper “On certain Organs of 
the Cidaride,” illustrated by some beautiful pencil drawings from nature. 
The main points of this communication may thus be summarized :— 
Among the Sea Urchins, or Hchinoidea, the families Diadematide, Echino- 
metrida, and Hchinide have long been known to possess external branchize 
in the form of five pairs of hollow conical processes, with secondary diverti- 
cula therefrom, the same being strengthened by calcareous plates or spicules. 
The existence of such branchie in the Cidaride was denied by Miller, but 
insisted on by Alex. Agassiz, in his ‘ Revision of the Echini.’ Mr. Stewart, 
in his examinations of a spirit specimen of Dorocidaris papillata, around the 
buccal membrane, failed to perceive them; but on removing the dorsal half 
of the corona, discovered five organs within, which functionally take the 
