of the Fishery Board for Scotland. 327 



Urothoe elegans, Spence Bate. 



Gammarus elegans, Spence Bate, Brit. Assoc. Rep. (1855). 

 Urothoe elegans, Spence Bate, Sess.-cyed 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 West wood, Brit. S ess. -eyed Crust., 



vol. i. p. (1863). 



Hahitat. — 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. 



Phoxocepl talus fultoni* n. s. (PL 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 antennas; joints of peduncle stout, sparsely furnished with 

 hairs, the last rather more than half the length of the penultimate joint ; 

 iiagellum shorter than the peduncle, 4-jointed joints sub-equal; secondary 

 appendage 3-jointed, extending to the end of the second joint of the 

 flagellum. Antennas 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 

 first 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 after my 

 friend, Dr T. Wemyss Fulton, Secretary to the Scientific Department of the Fishery 

 Board. 



