176 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. . 
trogidee 6, Chondrocanthide 1, Caligide 6, Lerneide 1, 
and Lerneopodide 1 species. 
It will be noticed that the above enumeration includes 
both the free swimming and semi-parasitic and wholly 
parasitic species, any exact line of division being impracti- 
cable as many of the semi-parasitic species are free 
swimmers at night being also occasionally taken by townet 
during the day. This 1s especially the case with members 
of the family Caligidee. 
During the many expeditions in the “‘ Hygena,” ‘‘ Spin- 
drift,” ‘‘ Mallard”? and other vessels, townets at the 
surface and at various depths have been systematically 
employed; and washings from dredged material have 
often yielded good results. The establishment of the 
Marine Biological Station upon Puffin Island early on in 
our work, under the directorship of Professor Herdman, 
F.R.S., proved of the greatest service as regards: the 
investigation of Copepoda, for besides affording the oppor- 
tunity of frequent personal visits, the resident curator 
during the greater part of the time forwarded ieeularly 
townettings, dredged mud, &c., for examination taken 
at various hours day and night and throughout the entire 
year. After five years work at Puffin Island, the removal 
of the L.M.B.C. Station to Port Erin at the south-west 
corner of the Isle of Man in the summer of last year has 
proved a complete success. The accessibility of the new 
station and its more completely equipped laboratory have 
facilitated the ready examination of living specimens 
immediately on landing from the boats, a circumstance of 
great value when dealing with minute forms of life like the 
Copepoda subject to rapid decomposition. 
The muddy bottom of Port Erin Bay inside the break- 
water has proved an exceedingly rich hunting ground for 
Copepoda, several of the new species having been taken 
