Rev. A. M. Norman’s Notes on British Amphipoda. 121 
greater or less size. pimera rather small. Antennules and 
antenne long and slender, subequal in length. Gnathopods 
of both pairs long and slender; hands small, subchelate. 
Percopods also long and slender, the three hinder pairs with 
the thighs only slightly dilated. Last uropods much longer 
than the two preceding pairs. Telson long, more or less 
deeply cleft. (Boeck.) e 
Melphidippa macra, Norman. 
(Pl. X. fig. 14, and Pl. XII. figs. 4-7.) 
1868. Atylus macer, Norman, Last Report Dredging Shetland, Brit. 
Assoc. Rep. p. 280. 
1870. Melphidippa longipes, A. Boeck, Crust. Amphip. bor. et arct. 
1876. Melphidippa longipes, Boeck, De Skand. og Arkt. Amphip. 
p. 414, pl. xxiv. fig. 6. 
Pleon having the posterior margin (Pl. X. fig, 14) of the 
first five segments serrated right across the back, with a large 
central hastate tooth, which increases in size from the first to 
the fourth segment, where it attains its greatest development. 
First gnathopods (Pl. XII. fig. 4) with wrist and hand sub- 
equal in length, somewhat fusiform, the former the broader ; 
hand widest in the middle, front margin gently convex, no 
defined palm, finger half as long as the hand, slender. Second 
gnathopods (Pl. XII. fig. 5) with wrist and hand subequal, 
long, and narrow ; hand narrow, fully four times as long as 
broad, margins subparalle]l, with four or five long sete on 
dorsal and about five fascicles of shorter sete: on front mar- 
gin; palm oblique, nail with a seta on outer and a group of 
about three sete on inner margin. Percopods excessively 
long and delicate, basos of posterior pairs (Pl. XII. fig. 6) 
very long, narrow, linear; meros and carpus both very long 
and slender (Pl. XII. fig. 7) and both longer than the long 
propodos ; nail very slender, half as long as the propodos, 
with a single seta beyond the middle on the inner margin. 
Uropods very long, the last pair with peduncle and branches 
subequal, the total length equal to four segments of pleon 
(7. e. third to sixth). ‘The eye is situated unusually low 
down and opposite the base of the antenna. The antennules 
and antenne are broken off in my specimens; Boeck says of 
the former “ flagello accessorio brevissimo, fere obsoleto,”’ and 
thus describes the telson :— Appendix caudalis ultra medium 
fissa ; laciniis in apice rotundatis.”” Length 5 millim. 
Hiab. St. Magnus Bay, Shetland, 60 fath., muddy bottom, 
S67 (A. Af, Ny: 
