Land, Fresh- Water, and Marine Crustacea. 153 



49. Stenothoe monoculoides (Montagu). 



1804. Cancer (Gammarus) monoculoides, Mont., Trans. Linn. Soc, 

 vol. xi. p. 4, pi. ii. fig. 3. 



Habitat. — Not very common; the specimens in my 

 collection were taken in Granton Harbour with a surface 

 tow-net. 



Family Metopid^ T. E, E. Stebbing, 1899. 1 

 Genus (31) Metopa, Boeck, 1870. 



50. Metopa Alderi (Spence Bate). 



1862. Montagua Alderi, Bate, Catal. Amphip. Brit. Mus., p. 57, 

 pi. viii. fig. 6. 



Habitat. — Firth of Forth, 1889 ; and taken subsequently at 

 nearly all the Experimental Stations within the limits of the 

 estuary. It has been also observed in the stomachs of 

 Whitings captured in 1901. 



51. Metopa borealis, G. 0. Sars. 



1882. Metopa borealis, G. O. Sars, Oversigt Norges Crust., i. p. 91, 

 pi. iv. fig. 4. 



Habitat. — Dredged in South Bay, off Musselburgh, in 1888. 



52. Metopa rubrovittata, G. O. Sars. 



1882. Metopa rubrovittata, G. 0. Sars, Oversigt Norges Crust., i. 

 p. 90, pi. iv. figs. 2, 2a. 



Habitat. — Obtained in a bottom tow-net gathering collected 

 at Station II. on 30th August 1894. 



53. Metopa pusilla, G. O. Sars. 



1892. Metopa pusilla, G. 0. Sars, Crustacea of Norway, vol. i. p. 206, 

 pi. xc. fig. 1. 



Habitat. — Firth of Forth, at the following places in 1901, 

 viz.: — At Stations III. and VII. in April, at Station III. in 

 May, and off North Craig in July ; but not more than one 

 or two specimens were obtained in any single gathering. 2 



1 Cf. "Revision of Amphipoda, " Ann. and Mag. Nat. Hist, for March, 

 April, and September 1899. 



2 Cf. Tiventieih F. B. Rept., pt. iii. p. 478 (1902). 



