330 Canon A. M. Norman on British Amphipoda. 



separation. Moreover, Jules Bonnier has stated tliat there is 

 dimorphism in tlie males in this genus (Jules Bonnier, " Le 

 dimorphisme des males chez les Crustaces Amphipodes," 

 Comptes rendus Acad. Sci., Dec. 22, 1890). 



50. Batliyporeia norvegica^ G. O. Sars. 



1862. Bathyporeia pilosa, Bvte & Westwood, (1) vol. i. p. 304 (partly 



at any rate). 

 ? 1876. Bat hjpureia pilosa, Boeck, (138) p. 209, pi. vii. fig. 3. 

 1891. Bathi/poreia norvegica, G. 0. Sars, (142) p. 128, pi. xliii. 



For remarks on Bate's specimens of B. pilosa see Walker, 

 Ann. & Mag. Nat. Hist. ser. 6, vol. xv. p. 470. It is a 

 question whether Bate's name GiiiUiamsonii [Thersiies 

 Gtiilliamsonii, Bate, Ann. & Mag. Nat. Hist. ser. 2, vol. xix. 

 p. 146) ought not to be used for this species. Sars applies 

 the name Bathypvreia pilosa, Lindstrom, to a Baltic form not 

 yet found in our seas. 



Ilah, Apparently the commonest form in Britain. Shet- 

 land ; Isle of Cumbrae; and Guernsey {A. M. N.) ; Banff 

 [T. Edward) ) Aberdeen {R. Dawson) ; Whitburn, Co. Dur- 

 ham {G. S. Brady) ; Firth of Forth (T. S.) : Mas. Nor. 

 North Wales and Isle of Man [A. 0. W.) ; 70-80 miles off 

 Spurm Head (T. S.) -, Jersey (Chevreux). 



Distrib. Ognebuct, off Jgederen, south coast of Norway 

 (G. 0. Sars) ; Le Croisic, Western France [Chevreux). 



51. Bathyporeia pelagica, Bate. 



1862. Bathyporeia pelagica, Bate & Westwood, (1) vol. i. p. 309, J. 

 1875. Bathyporeia pilosa, Stebbing-, " On the Genu.s Bathyporeia,'" Aun. 



& Mag. Nat. Hist. ser. 4, vol. xv. p. 74, pi. iii.* 

 1877. Bathyporeia tenuipes, Meinevt, "Crust. Isop. Aniphip. et Decap. 



Danise," jsaturhist. Tidsskr., 3 Rnekkes, vol. xi. p. 101. 

 1891. Bathyporeia pelayica, Sars, (142) p. 129, pi. xliv. fig. 1. 



Hah. Shetland and Isle of Cumbrae [A. M. N.) ; Banff 

 (T. Edward) ; Aberdeen (/?. Dawson) ; 25 miles off May 

 Island, Firth of Forth {Murray) ; Firth of Forth {T. S.) ; 

 ' Porcupine,' 1869, Stat. 18, west of Clew Bay, Ireland, 

 183 fathoms: Mus. Nor. 70-80 miles off Spurm Head 

 (T. S.). Isle of .Alan; North Wales; Guernsey [A. 0. W.); 

 Jersey {Sinel & IJornell). St. Andrews (APIniosh). 



Distrib. With the preceding at Ognebuct, off Jjederen, 

 South Norway, and Lofoten Islands (Sai-s) ; Tromso and 

 Yardo, Finmark [Schneider) ; Sweden (tide Sars) j Denmark 

 (Meinert) ; West France [Chevreux). 



» Referred to by Sars, but fig. 1 appears to be B. norvegica, Sars, while 

 the male is B. pelagica. 



I 



