138 LIVERPOOL BIOLOGICAL SOCIETY. 
this I have received valuable co-operation from my friend 
Mr. W. S. McMillan, F.L.8., of Maghull, who has made 
the Copepoda a special study. 
We have made out in all sixty-eight species, belonging 
to the various families as follows :— 
Calamid@ .....:.:s602..00 41 Species. 
Gyclopidieesic.s saneseet 3 ¢ 
Harpacticidie 7...215, 4. 4 he 
Corycmidie <c.......<.45s Lea; 
Cymbasomatide ......... 1 . 
Calividiety tc tila s or eee Ee 
Of these species, three are new to science, viz. Acartia 
verrucosa, Zosime rubra, and Copilia brucit (Pls. VI. to IX.) 
Hleven out of the sixty-eight species are found in British 
seas, V1Z.:— 
Calanus finmarchicus, Gunner. 
Pseudocalanus elongatus, Boeck. 
Pleuromma abdominale, Claus. 
Candace pectinata, Brady. 
Dias longiremis, Lilheborg. 
Centropages typicus, Kroyer. 
Isias clavipes, Boeck. 
Oithona spintfrons, Boeck. 
Peltidium purpurewm, Phillipi. 
Porcellidiwm viride, Phuillipi. 
Caligus mullert, Leach. 
Tt is to be noted that all the tow-netting was done at or 
near the surface, and it is more than probable other forms 
may yet be met with if sought for at greater depths, for it 
has recently been strikingly shown by Dr. John Murray, 
of Edinburgh, that at great depths in some of the Scotch 
lochs remarkable forms of Copepoda exist which are 
