52 TRANSACTIONS LIVERPOOL BtOLOCrlCAL SOCIETY. 



channel, measuring nearly 80 miles long by about two 

 miles wide, is over 100 fathoms deep. 'Die greatest depth 

 given on the Admiralty (-hart is 149 fathoms, and is 

 traversed by the telegraph cable between Portpatrick and 

 Donaghadee. An investigation of this area beyond the 

 50 fathom line can only be attempted with a good sea- 

 going vessel, well furnished with, scientific apparatus. 

 This has not been available in the past, but would be 

 possible with the aid of an annual grant from the 

 Government, on the lines suggested by Professor 

 Herdman in the Report on the Lancashire Sea-Fisheries 

 Laboratory for 1906. 



The additions now recorded were mostly obtained 

 from Professor llerdman's collections of plankton taken 

 off the Isle of Man during the Easter and summer 

 vacations of 1907, from the yacht " Ladybird." Two of 

 them are from collections outside the 50 fathom line. 



Erythrops erythrophthalmus (Goes). Three specimens 

 of this schizopod were found in a collection taken with 

 the " shear " net between Calf Island and Port Erin on 

 April 18th, 1907. 



Eudorella emarginata (Kroyer). This cumacean, 

 easily recognised by the large semilunar emargination at 

 the anterior edges of the carapace, and the very prominent 

 tooth-like process denning the ventral limit of the 

 emargination, was found in two collections made with 

 the Hensen net on August 24th, 1907. The samples 

 were from the deep area and contained much fine mud. 



Microcalanas jmsillus, G. O. Sars. Professor Sars 

 describes this little copepod in his great work on the 

 Crustacea of Norway It is said to be a true deep-water 

 form and only occurred in depths of more than 150 

 fathoms. The species was not uncommon in hauls made 

 with the Hensen and jSTansen nets at depths between 50 



