10 



At the Conversazione the following subjects were illustrated:— 

 r Blood discs of Frog Joseph Davies. 



Do. Typical examples j 



Butterfly scales, artistically arranged vThe President. 



Scales of White Cabbage Butterfly ) 



Scales of Meadow Brown Butterfly (Hipparchia 



janira) G. Watsox Gray. 



Wing scales of Butterflies Willoughby Gardner. 



Do. do William Oelrichs. 



Cartilaginous ring from the sucker of Squid William Narramore. 



Cat's Tongue, transverse section Charles Botterill. 



Crystals (polarized) R. Xicholson. 



Foraminifera from West Indies W. H. Read. 



Hair-follicles, cross sections F. C. L.\RKiy, M.RC.S. 



Myrica cerifera, section of J. M. Willi.^ms. 



Oak-apple Fly (Andricus terminalis) A. Johnson. 



Spirillum volutans Joseph Wall. 



Triceratium septangulatum T. W. Bruce. 



March 2nd. — A communication from Mr. George Thomas, entitled "A few 

 Notes on Microscope Eye-Pieces," was read by the Secretaiy. The paper 

 of the evening was read by Mr. Isaac C. Thompson, F.L.S., F.R.M.S. 

 upon "Some New and Rare Species of Copepoda recently found in Liverpool 

 Bay." Since the establishment of the Liverpool Marine Biology Committee 

 by Professor Herdman, some three years ago, a vast amount of work has 

 been done towards investigating and tabulating the marine life of our neigh- 

 bourhood. Mr. Thompson has worked chiefly at the Copepoda, a large 

 class of microscopic Crustacea — animals somewhat resembling very minute 

 shrimps; and in this paper described some of the new and rarer species 

 recently found. Until the L.M.B.C. was established, only six species of 

 marine Copepoda had been recorded in this district, the number having 

 since reached over fifty. Of these, four species are new to Britain, and 

 three are altogether new to science. Two of the other species have not been 

 before recorded in Britain for fifty and thirty years respectively. Some of 

 the new and rarer forms ilr. Thompson described by the aid of wall 

 illustrations, the animals themselves being all shown under microscopes by 

 Members at the subsequent Conversazione. The Biological Station recently 

 opened on Puffin Island, under the directorship of Professor Herdman, had 

 proved a great success, and was the means of furnishing much new and 

 valuable information respecting the lowly organisms constituting the surface 

 life of our seas. Mr. Thompson described the mode of capturing the 

 Copepoda in a fine long tow-net from the stern of a boat or steamer. The 



