sea-fisheries laboratory. 213 



Notes ox Some of the Rarer Forms from the 

 Tow-nettings. 



(1) Acanthometra, one of the radiolarians, has been 

 noticed on three occasions during the year. On February 

 4th and 10th it was fairly plentiful in the Port Erin tow- 

 nettings. It was also noted in a surface collection taken 

 off Rhyl on March 27th. We have observed this organism 

 in tow-nettings taken by the steamer in previous years, 

 and Mr. Chadwick has also met with it at Port Erin. 



(2) Noctiluca, so far as the tow-nettings show, appears 

 to have extended from Blackpool to Red Wharf Bay, from 

 the middle of July to the middle of October. It is not 

 noted for Sections "VI. and VII., or the three off-shore 

 stations. Its absence from these, however, cannot be 

 definitely proved, owing to the absence of sufficient tow- 

 nettings. 



(3) Microniseus. A number of specimens of this 

 parasite were attached to the Calanus taken in the tow- 

 netting collected at Port Erin on September lQth. 



(4) Squilla. About thirty specimens of the late free- 

 swimming stage were found in a tow-netting from Section 

 VII., taken Angnst 2nd. It does not appear to have been 

 previously noted from any part of the Irish Sea. 

 According to E. W. L. Holt, they are got regularly at 

 certain seasons on the West Coast of Ireland. Professor 

 Jeffrey Bell, in the Journal of the Marine Biological 

 Association, N.S., Vol. VI., No. 3, records the occurrence 

 of a single specimen of adult Squilla desmaresti in the 

 North Sea in 1901, and states, on the authority of Dr. 

 Hoek, that the only previous record for that region is an 

 EricMJieus stage discovered in 1872. Two figures of one 

 of the Welsh specimens are given with this report 

 (Text-fig. 2). 







