of the Fishery Board for Scotland. 
327 
Urothvi' vh tjans, Spence Bate. 
Gaui warns elegans, Spence Bate, Brit. Assoc. Rep. (1855). 
Urothoe elegans, Speuce Bate, Sess.-eyed Crust., vol. i. p. 200 
(1863).' 
Habitat. — Largo Bay, not uncommon. A small but robust species, 
which does not appear to have been previously recorded for the Forth. 
Leucothoe spinicarpa (Abildgaard). 
Gammarus spinicarpus, Abildgaard, Zool. Dan., vol. iii. p. 66, pi. 
cxxix. figs. 1-4. 
Leucothoe spinicarpa, A. Boeck, Crust. Amph., bor. et arct., p. 78 
(1870). ' 
Leucothoa spinicarpa, Bate and Westwood, Brit. Sess.-eyed Crust., 
vol. i. p. (1863). 
Habitat.— Largo Bay, rare. Leucothoe is readily distinguished by the 
peculiar form of the hands of the first pair of gnathopods, which some- 
what resemble the blades of a pair of scissors with curved points. I have 
frequently taken this species, but usually in the branchial cavities of large 
Ascidians, and very seldom otherwise. I have observed it in such situations 
at East Loch Tarbert (Loch Fyne),at Scapa Flow, Orkney, and in the Moray 
Firth. It is of a delicate reddish or pink colour, and moderately active. 
It is curious that this somewhat semiparasitic habit of L. spinicarpa has 
been so seldom referred to by authors. 
Phoxocephalus fultoni* n. s. (PI. XII. figs. 10-12), and PL XIII. figs. 
13-19. 
Rostrum (fig. 12) extending to about the end of the second joint of the 
peduncle of the antennules. Antennules short, not longer than the 
peduncle of the antennae; joints of peduncle stout, sparsely furnished with 
hairs, the last rather more than half the length of the penultimate joint; 
flagellum shorter than the peduncle, 4-jointed joints sub-equal; secondary 
appendage 3-jointed, extending to the end of the second joint of the 
flagellum. Antennae short, stout, furnished with a few hairs, especially on 
the upper distal margin of the joints. There is no very marked difference 
between the peduncle and flagellum ; second and third joints of peduncle 
about equal in length; flagellum 3-jointed, rather longer than the last joint 
of the peduncle. The thigh of the first gnathopods is long, the anterior 
distal angle of the short stout meros is produced into a small rounded pro- 
cess; the adjacent parts of meros and wrist are correspondingly hollowed 
out, and thus a kind of ball and socket joint is formed (fig. 15, a ); hand (fig. 
15) subquadrate, the length about twice the breadth; sides nearly straight 
and parallel; palm slightly convex, and produced forward at an obtuse angle 
from the joint of the finger; finger slightly curved, the point reaching 
nearly to the extremity of the palm, and fitting into a small notch. Second 
gnathopods very like the first, but the hand is to some extent propor- 
tionally broader; the hands of both first and second gnathopods have a 
fringe of short hairs along each side of the palm. The first, second, and 
third perieopods are short and stout; the fourth are longer, the fifth are 
also short and stout. The outer branch of posterior pleiopods is 2-jointed, 
the terminal joint being very much shorter than the other; the inner branch 
is 1-jointed, and small, being scarcely more than half the length of the 
iirst joint of the outer branch (fig. 19). 
I obtained two forms of this species ; they resemble each other closely. 
* It gives me much pleasure to have the opportunity to name this species afttT my 
friend, Dr T. Wemyss Fulton, Secretary to the Scientific Department of the Fi: In i v 
Board. 
