MARINE BIOLOGICAL STATION AT PORT ERIN. 39 



appearance in great abundance during June and July 

 which completely choked the meshes of the net and pre- 

 vented the water from passing through. This gelatinous 

 alga also occurred in abundance off the North Wales coast 

 when I was on board the " John Fell " in the middle of 

 June, 1901.* 



" Protozoa. — Noctiluca very abundant in November, 

 1900, giving the water a distinct brown colouration. It 

 gradually thinned off in December, and was absent from 

 all gatherings taken till March and June, 1901. Yery 

 few occurred then, and none were seen till it again 

 appeared in numbers in September. Beroe : Small speci- 

 mens were common in November and December ; in one 

 gathering taken in November 33 Beroe were counted ; none 

 were taken in January, a few were seen in February and 

 March ; it disappeared again after that month, but 

 reappeared in September. 



" Vermes. — Sagitta was very abundant during 

 November and December, 1900, January, February and 

 March, 1901, gradually thinning off in April ; none were 

 seen in May, but a few turned up in June ; none were seen 

 again till September. 



" Crustacea. — The common forms of Copepoda, such 

 as Centropages, Temora, Acartia and Oithona were pre- 

 sent in all gatherings taken except during July and 

 August ; other forms made their appearance from time to 

 time. During the second week of March immense 

 numbers of Balanus nauplii were collected." 



I have received the following Report from Dr. O. V. 

 Darbishire : — 



" I worked at the Biological Station, Port Erin, for 



* This is probably the same organism which was noted as causing 

 "Foul water" there in 1885 and 1887, and on other occasions since, by 

 Mr. Thompson ; See our first Annual L.M.B.C. Report, p. 55.— W. A. H. 



