330 Canon A. M. Norman on British Amphipoda. 



separation. Moreover, Jules Bonnier has stated that there is 

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

 dimorphisme des males chez les Crustaces Amphipodes," 

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



50. Bathyporeia norvegicctr, 6. O. Sars. 



1862. Bathyporeia jrilosa, Bate & Westwood, (1) vol. i. p. 304 (partly 



at any rate). 

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

 1891. Bathyporeia 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 Guilliamsonii [Thersites 

 Ouillia7nsomi, Bate, Ann. & Mag. Nat. Hist. ser. 2, vol. xix. 

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

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

 yet found in our seas. 



Hah. Apparently the commonest form in Britain. Shet- 

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

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

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

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

 Spurm Head {T. S.) ; J ers&y (Ckevreux). 



Distrib. Ognebuct, off Jaderen, south coast of Norway 

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



51. Bathyporeia pelagica, Bate. 



Westwood, (1) vol. i. p. 309, 



Aun. 



1877. Bathyporeia tenuipes, Meinert, " Crust. Isop. Ampliip. et Decap. 



Daniae," Naturbist. Tidsskr., 3 Rpekkea, vol. xi. p. 101. 

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



Hab. Shetland and Isle of Cumbrae {A. M. N.) ; BanfF 

 (T. Edward) ; Aberdeen {R. Dawson) ; 25 miles off May 



_^„ Spi 



{T. S.). Isle of Man; North Wales; Guernsey {A. 0. W.) ; 

 Jersey {Sinel & Hornell). St. Andrews {Mcintosh). 



Distrib. With the preceding at Ognebuct, off Jgederen, 

 South Norway, and Lofoten Islands {Sars) ; Tromso and 

 Vardo, Finmark [Schneider) ; Sweden (fide Sars) • Denmark 

 (Meinert) ; West France [Chevreux). 



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

 the male is B, pelagica. 



