ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 279 



tennse with a secondary appendage. Mandible having a three-jointed palp. 



Gnathopods not subchelate. Telsoii squamiform, deeply cleft. 



Syrrhoe hamatipes, n. sp. None of the segments of pleon serrated or toothed. 

 Superior antennae 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 antennae 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 setae ; anterior margin 

 with two or three such setae ; 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 setae, and the carpus terminating in 

 such setae 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. 

 Telsoii 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 Syrrhoe-, the head 

 having been crushed, I am unable to speak with precision respecting 

 the eyes and rostrum. 



Monoculodes carinatus, Bate= (Ediceros affinis, Bruzelius, Skand. Amphip. 

 Gammarid. p. 93, pi. iv. fig. 18. St. Magnus Bay, 1867. Male and 

 female ; the antennae much longer in the former, as is also the case with 

 (Ediceros parvimanus. 



Stimpsoni, Bate. Sixty miles east of Shetland, in 70-90 fathoms, one 



specimen, 1861. 



Kroyera 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. 



Urothoe marinus, Bate. Balta Sound ; 5-8 miles east of Balta, and St. Mag- 

 nus Bay, 5-GO 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. 



LiUjeborgia Shetlandica, Bate & Westw. The types were dredged in 40 

 fathoms, one mile north of AVhalsey Lighthouse, and in 2-5 fathoms in 

 Out Skerries Harbour in 1861. 



IpJiimedia obesa, llathke. Widely distributed, 2-50 fathoms. 



