ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 279 
tenne with a secondary appendage. Mandible having a three-jointed palp. 
Gnathopods not subchelate. Telson squamiform, deeply cleft. 
Syrrhoé hamatipes, n. sp. None of the segments of pleon serrated or toothed. 
Superior antenne with a smooth round peduncle, reaching the middle 
of the penultimate joint of the inferior, the first joint nearly as long as 
two following combined, which are subequal to each other, the last 
rather the shorter; filament rather longer than peduncle, composed of 
7-8 long slender articulations; secondary appendage two-jointed. In- 
ferior antennz with a long peduncle, last joint rather longer than the 
first, and two-thirds as long as second; filament shorter than peduncle, 
7-jointed, joints very long and slender. Gnathopods not subchelate, 
almost identical in structure ; wrist with subparallel margins, of nearly 
equal breadth throughout; hand much narrower than and about two- 
thirds the length of wrist, which it resembles in form ; posterior margins 
of both wrist and hand with numerous plumose sete; anterior margin 
with two or three such sete ; finger two-thirds length of hand, only 
very slightly curved, not capable of being closed with the hand. Pereio- 
pods with meros and carpus of equal length ; propodos rather more than 
half length of carpus and much narrower; nail small, bent at right 
angles to propodos, and having a little spine at half its length ; two 
spines project forwards from the extremity of the propodos, which are as 
long as the nail. Last pereiopods short, having the basos greatly pro- 
duced backwards and downwards into a membranaceous lobe, which ex- 
tends to the distal extremity of the meros; meros and carpus subequal 
in length, both very wide and flat, the latter slightly tapering distally ; 
both margins fringed with plumose sete, and the carpus terminating in 
such sete of considerable length and extending beyond the nail; pro- 
podos styliform, much shorter than and scarcely a quarter as broad as 
the carpus ; nail (similar to those of preceding pereiopods) slender, small, 
bent at right angles to the propodos, and having a little spine at half 
its length. Last uropods two-branched; branches subequal, lanceolate. 
Telson squamiform, not long, cleft to the base. Length one-fourth of 
an inch. One specimen, dredged in St. Magnus Bay, 1867. 
I place this species provisionally in the genus Syrrhoé; the head 
having been crushed, I am unable to speak with precision respecting 
the eyes and rostrum. 
Monoculodes carinatus, Bate= diceros affinis, Bruzelius, Skand. Amphip. 
Gammarid. p. 93, pl. iv. fig. 18. St. Magnus Bay, 1867. Male and 
female; the antenne much longer in the former, as is also the case with 
Gdiceros parvimanus. 
—— Stimpsoni, Bate. Sixty miles east of Shetland, in 70-90 fathoms, one 
specimen, 1861. 
Kréyera altamarina, Bate & Westwood. The type, taken sixty miles east of 
Shetland in 1861; also 5-8 miles east of Balta, in 40-50 fathoms, 1867. 
Urothoé marinus, Bate. Balta Sound; 5-8 miles east of Balta, and St. Mag- 
nus Bay, 5-60 fathoms. 
elegans, Bate. In the same localities as the last; also on the Out 
Skerries Haaf, in 60-70 fathoms. 
Bairdii, Bate. St. Magnus Bay. , 
Lilljeborgia Shetlandica, Bate & Westw. The types were dredged in 40 
fathoms, one mile north of Whalsey Lighthouse, and in 2-5 fathoms in 
Out Skerries Harbour in 1861, 
Iphimedia obesa, Rathke, Widely distributed, 2-50 fathoms. 
