226 ME. A. O. WALKER ON SOME 



On some new Species of Edriophthalma from the Irish Seas. 

 Bj Alfred 0. Walker, P.L.S. 



[Read 15th April, 1897.] 

 (Plates 17 & 18.) 



Of the four species described in this paper, two, viz. Leuco- 

 nopsis ensifer and Stenothoe crassicornis, were taken during the 

 dredging and trawling operations of the Liverpool Marine 

 Biological Committee in April 1896, in the Lancashire Sea 

 Fisheries' steamer ' John Fell.' The steamer was at the time 

 engaged in taking fish for the purpose of obtaining ova for the 

 experimental fish-hatchery at Port Erin, and it was found that 

 by attaching a tow-net with a light cane ring to the back of the 

 trawl-net a short distance behind the " foot rope " many small 

 Crustacea were taken, including the above. The same mode of 

 fishing has also been successfully employed by Mr. E. L. Ascroft, 

 in a trip made by him, in the steam-trawler ' Britannia,' to the 

 northern part of the Bay of Biscay ; and it resulted in the capture 

 of some new and rare species of Cumacea and Amphipoda. 



Of the other two species, Apseudes hibernicus was taken during 

 a week's collecting at Valentia by Mr. F. "W. Gramble ; while 

 Farapleustes megacheir was obtained in the expedition of the 

 Eoyal Irish Academy, in 1888, and came under my notice while 

 naming the collection of Amphipoda in the Dublin Museum of 

 Science and Art. Until the publication of the Eeport of the 

 Committee on the Marine Zoology of the Irish Sea, in the British 

 Association Eeport, 1896, very little had been done in investi- 

 gating the Edriophthalma of the Irish Seas, except in the 

 neighbourhood of the Isle of Man, where the Liverpool Marine 

 Biological Committee's station at Port Erin had enabled me to 

 collect a large number of species during the last 10 years, all of 

 which (including those taken on the English and "Welsh coasts of 

 Liverpool Bay) are published in the above Eeport. I must not 

 omit to mention an important paper by the Eev. A. M. JN^orman, 

 F.E.S., on the Cumacea of the 'Lightning,' 'Porcupine,' and 

 ' Valorous ' Expeditions, in the Ann. & Mag. Nat. Hist. ser. 5, 

 vol. iii. (1879) p. 54, in which several species from the Irish seas 

 are described or mentioned. I may add that I hope shortly to 

 publish a list of Crustacea from Valentia, with the Isopoda and 

 Amphipoda in the Dublin Museum of Science and Art. 



