COPEPODA FEOM WEST OF IBELAND. 95 



discovered nor have they been recorded as parasitic on 

 any other animal. 



A single specimen of Anomalocera pater sonii occurred 

 in No. 16 bottle. This large and very striking species is 

 very variable in its distribution, often occurring in 

 immense profusion, but is otherwise uncommon. On 

 more than one occasion I have seen the surface of the 

 sea, for many miles around the Isle of Man, so densely 

 covered with this animal as to make it distinctly recog- 

 nizable from the ship's side, and its beautiful coloration 

 is well known to microscopists. 



Pseudocalanus armatus a few specimens of which I 

 found in No. 18 is usually a deep swimmer and never 

 common. 



The occurrence of the two southern species Corycceus 

 speciosus and Onccea mediterranean is specially interesting 

 as indicating most probably Gulf Stream influence. So 

 far as I am aware the former is new to Britain although 

 it is quite possible that it may have been mistaken for 

 C. anglicus, Lubbock, which it strongly resembles. The 

 position of the eyes and the strongly divergent caudal 

 stylets in these specimens seem to clearly indicate its 

 identity with Corycceus speciosus, Dana. I found several 

 specimens, some with ovisacs, in No. 18 only, so it 

 appears to have arrived at the end of an unusually hot 

 summer and would probably succumb to the first cold. 



Onccea mediterranea was found sparingly by Mr. G. C. 

 Bourne, M.A., near Plymouth, in 1889 (Report on the 

 Pelagic Copepoda collected at Plymouth in 1888-9), but I 

 am not aware that it has hitherto been reported elsewhere 

 in Great Britain or indeed north of the Mediterranean. 

 I have found it common about the Canary Islands. Two 

 or three specimens only, occurred in No. 18. The other 



