130 Rev. A. M. Norman's Jslotes on British Amphipoda. 



jected in tooth-like form ; from the concavity spring three 

 spines, of which the central is the longest. 



The female is very like the same sex of G. SundevaUi ; 

 but the transverse rows of sette of the wrist of second gnatho- 

 pod (PI. XI, tig. 11) appear to want the hamate character so 

 conspicuous in the adult and more or less evident in the 

 young of the allied species. 



Hob. Off Holy Island, on the Northumberland coast, 

 1864* {A. M. N.)] off coast of Aberdeen {the late Mr. R. 

 Dawson) ; off Farland Point, Isle of Cumbrae, 20 fath. 

 [A. M. N. and D. Robertson, 1888) : Mus. Norm. 



Distrihution. Floro, Norway, 45-70 fath. [A. M. N.) : 

 Mus. Norm. Bohuslan, Sweden {Bruzelius) ; Norway, at 

 Mandal {Boeck) ; Christiansund (Duben) ; Arcachon, France, 

 31. DoJfuss, Luc-sur-Mer, M. Topsent, and Croisic {Ghev- 

 reaux). 



2. Gheirocratus SundevaUi (Ratlike). 

 (PI. XI. figs. 9, 10, and PI. XII. figs. 1-3.) 



1843. Gammarns SundevaUi, Rathke, Beitrage zur Fauna Norwegens, 



p. 65, pi. iii. fig. 2, S ■ 

 1853. Gammarus SmidevaUi, Lilljeborg, Kongl. Vet.-Akad. Haudl. 



p. 454. 

 1859. Gammarns SundevaUi, Bruzelius, Skand. Ampliip. Gamm. p. 57. 

 1802. Gammarus SundevaUi, Bate, Cat. Ampbip. Crust. Brit. Mus. 



p. 213, pi. xxxviii. fig. I, (^ . 

 1862. Protomedeia Whkei, id. ibid. p. 169, pi. xxxi. fig. 3, $. 

 1802. Liljehorgia shetlandica, Bate &, Westw. Brit. Sessile-eyed Crust. 



vol. i. p. 206, cJ. 

 1862. Protomedeia Whitei, iid. ibid. p. 300, $ . 

 1868. Protomedeia (?)JJ7iitei, Norman, Last Report Dredging Shetland 



Isles, Brit. Assoc. Rep. p. 283, $ & J . 

 1870. Clieirocrattis SundevaUi, A. Boeck, Crust. Ampbip. bor. et arct. 



p. 133. 

 1876. Cheirocratus SundevaUi, A. Boeck, De Skand. og Arkt, Ampbip. 



p. 396_, pi. xxiv. fig. 2, c? $ . _ 

 1874. Liljehorfjia NonnaJini, Stebbing, Ann. & Mag. Nat. Hist. ser. 4, 



vol. xiv. p. 10, pi. i. fig. 1 a-e, c?. 

 1876. Liljehorgia Nuriuanni, id. ibid. vol. xvii. p. 76, pi. v. fig. 4, S • 

 1880. Cheirocratus hrevicornis, Hoek, Carcinologisches (Tijdschr. d. Ned. 



Dierk. Vereen. vol. iv.), p. 142, pi. x. figs. 10-13, S - 

 1884. Cheirocratus brevicornis, Blanc, Die Ampbipoden der Kieler 



Bucht, p. 72, pi. viii. figs. 76, 77, cf $ . 



Great confusion has existed respecting this species. This 

 confusion has arisen from three causes : — first, the separation 

 of the sexes ; secondly, the insufficiency of the earlier figures 



* Mr. Robertson, in bis ' Contrib. to Cat. of Ampbipoda and Isopoda of 

 tbe Firtli of Clyde,' bas by an error tbougbt tbat tbe Holy Island off 

 which I took this species was tbe island so named in tbe Firtb of Clyde. 



