Rev. A. M. Norman’s Notes on British Amphipoda. 137 
corresponds most closely in all its characters with those taken 
in our seas, except that the palm of the first gnathopods is 
more defined, being slightly hollowed, and the hand of the 
second gnathopods is a little larger in proportion to the wrist. 
All the microscopic characters of sete, spines, fur, &c. 
exactly agree; but in consequence of the coarser growth of 
the limb the characters of armature of the inside of the finger 
of first gnathopods cannot be so exactly determined. ‘The 
dorsal armature in this specimen is :—first segment (by acci- 
dent lost in dissection) ; second eleven teeth; third eleven 
teeth ; fourth seven, the central very large; fifth three, cen- 
tral large, and two articulated intervening spines. 
In specimens received from 'Tromsé the dorsal spines are 
larzer in size proportionately than in examples which I have 
had the opportunity of examining from other localities. The 
larger the number of spines on asegment the smaller the size 
those spines attain. 
Hab. 'Three specimens taken from fishing-boats, Culler- 
coats, Northumberland (A. M. N.): Mus. Norm. 
Distribution. Greenland, in lat. 66° 59’ N., long. 55° 27! 
W.., 57 fath., ‘ Valorous’ Exped. 1876; off Halifax, Nova 
Scotia (S. L. Smith); Tromsé (S. Schneider); Sweden 
(Lovén) : Mus. Norm. Iceland (Yorell) ;  Spitzbergen 
(Goés); Grand Manan (Sé/mpson); Labrador (Packard) ; 
West Norway, at Haugesund (Boeck) ; Denmark (Jevnert). 
Genus IX. GAMMARUS, Fabricius, 1776. 
1. Gammarus locusta (Linn.). (Pl. XII. fig. 11.) 
1767. Cancer locusta, Linné, Syst. Nat. edit. xii. p. 1055. 
1780, Oniscus puiex, Fabricius, Fauna Greenlandica, p. 254. 
1820. Gammarus arcticus, Scoresby, Account of the Arctic Regions, 
vol, i. p. 451, pl. xvi. fig. 4. 
1824. Gammarus boreas, Sabine, Suppl. Appendix Parry’s Voyage, 
p- 229.—1862. Bate, Cat. Amphip. Brit. Mus. p. 213, pl. xxxvii. 
fig. 10. 
1880. Gammarus ornatus, H. Milne-Edwards, Ann. des Sci. Nat. xx. 
p- 372, pl. x. figs. 9, 10.—1840. Hist. Nat. des Crust. vol. iii. p. 47. 
—1862, Bate, Cat. Amphip. Brit. Mus. p. 212, pl. xxxvii. fig. 8.— 
1873. S. I. Smith, Report United-States Comm. Fish & Fisheries, 
p- 557, pl. iv. fig. 15. 
1851. Gammarus sitchensis, Brandt, Middendorff's Sibir. Reise, Bd. ii. 
p- 137, pl. vi. figs. 28 a—c.—1862. Bate, Cat. Amphip, Brit. Mus. 
p. 210, pl. xxxvii. fig. 4. 
1853. Gammarus pulex, Stimpson, Invert. Grand Manan, p. 59. 
1854. Gammarus mutatus, Lilljeborg, Kong]. Vet.-Akad. Handl.+p. 447. 
1862. Gammarus locusta, Bate & Westw. Brit. Sessile-eyed Crust. 
vol. 1. p. 873 (et auct.). 
