128 Rev. A. M. Norman’s Notes on British Amphipoda. 
below, the first pointed in front. Pleon with dorsal margins 
smooth, not spined; second and third segments with infero- 
posteal angles produced into a spine-like point. Antennules 
with first two joints of peduncle remarkably long, the second 
slightly longer than the first, third not one third the length 
of the second; flagellum of 17-24 articulations, secondary 
appendage five-jointed, subequal in length to four joints of 
flagellum. Antenne about equal in length to the peduncle of 
the antennules; fourth joint longer than fifth; flagellum short, 
subequal in length to last joint of peduncle. rst gnatho- 
pods with subtriangular wrist ; hand subovate, wider at the 
extremity than at the base, subequal in length to the wrist, 
palm convex, scarcely defined ; finger strong, slightly curved, 
simple, with sete on the outer and cilia on the inner margin. 
Second gnathopods having the meros produced below into a 
spine-point; wrist subtriangular, widening much distally ; 
hand of moderate size, subquadrate, length to breadth as 5 to 
3, widening slightly to the palm; palm only very little 
oblique, defined by a long spine, crenulated or toothed, and 
edged with a few spinules. Perwopods all slender, with very 
long linear thighs, which in all the limbs are the longest 
joints; thighs of last three pairs gradually increasing in 
breadth, but that of last pair about four times as long as 
broad, its margins with distant serrulations ; nails of mode- 
rate length and acute. Last uropods with very long lanceo- 
late branches, about three times the length of the peduncle. 
Telson cleft to two thirds its length, cleft widely open, each 
apex ending in two spine-points and a cilium. Length 18- 
22 millim. 
Hab. Sound of Skye, 1866 (A. MZ. N.); Loch Fyne, 
dredged by the ‘ Medusa,’ the vessel of the Scotch Marine 
Station, 1888 (D. Robertson): Mus. Norm. ‘Taken by 
‘ Medusa’ off the lighthouse, Little Cumbrae, Firth of Clyde, 
in 55-60 fath., and off the Isle of Arran, N.B., in 80 fath., 
on soft mud (D. Robertson!) ; one specimen among material 
dredged a little west of Inchkeith, Firth of Forth, 1887 (7. 
Scott !). 
Distribution. Greenland (Hansen); Advent Bay, Spitz- 
bergen, 20 fath. (Smtt, tide Goés); Bohuslin, Sweden 
(Lovén, fide Goés); Denmark (Meenert); West Norway 
(Danielssen). 
Genus VI. GAMMARELLA, Bate, 1857. 
Gammarella brevicaudata (H. Milne-Edwards). 
1830. Gammarus brevicaudatus, H. Milne-Edwards, Ann. des Se. Nat. 
vol, xx. p. 569, ¢ Q. 
