of the Fishery Board for Scotland. 213 
The eyes are lageniform, and, being large and black, give a marked 
character to the species. 
Genus Batuyporeta, Lindstrém (1855). 
Bathyporeia norvegica, G. O. Sars. (Pl. V. fig. 22.) 
Bathyporeia pilosa, Boeck (not Lindstrém). 
1891. Bathyporeia norvegica, G. O. Sars, loc. ctt., p. 128, pl. 43. 
1892. Bathyporeia norvegica, T. and A. Scott, ‘Ann. and Mag. 
‘ Nat. Hist.,’ s. 6, vol. x. p. 205. 
Specimens of this species are occasionally obtained in various parts of 
the Firth of Forth. It may be distinguished by its larger size, and espe- 
cially by the tooth-like form of the postero-lateral angles of the epimeral 
plates of the third metasome. 
Bathyporeia pelagica, Sp. Bate. (Pl. V. figs. 23-25.) 
1862. Bathyporeta pelagica, Sp. Bate, ‘Cat. Amphip. Brit. Mus.,’ 
p. 174, pl. xxxi. fig. 6. 
1891. Bathyporeia pelagica, G. O. Sars, op. cet., p. 129, pl. 44, 
fig. 1. 
After a careful examination of a considerable number of Forth speci- 
mens of Bathyporeia, I have been enabled, with the assistance of Prof. 
G. O. Sars’ ‘ Crustacea of Norway,’ to distinguish this and the following 
species. The exceedingly long flagellum of the posterior antennz of the 
adult male enables Bathyporeia pelagica to be readily distinguished 
except from Bathyporeia norvegica ; but in this case, not only is there a 
difference in size, there is also the difference in the form of the epi- 
neral plates of the third metasome, which, in all but Bathyporeia 
norvegica, have postero-lateral angles more or less rounded. In Bathy- 
poreta pelagica the dorsal flexure of the first urosome is very marked, and 
the four small submedian sete on its lower convex portion are present on 
all the specimens observed in the Forth; the two lower ones are short, 
stout, and distinctly spiniform. 
Bathyporeia robertsoni, Sp. Bate. (PI. V. figs. 26-29.) 
1862. Bathyporeva robertsont, Sp. Bate, ‘Cat. Amphip. Brit. Mus.,’ 
p. 173, pl. xxx1. fig. 5. 
1891. Bathyporeia robertsont, G. O. Sars, op. cit., p. 131, pl. 44, 
fig. 2. 
In this species the flagellum of the adult male posterior antennz is 
comparatively short, and the first urosome wants the two posterior sub- 
median dorsal spiniform setz ; it also differs in having the last joint of 
the last pair of uropods very small. In the ‘ Revised List of the Crus- 
‘tacee of the Firth of Forth,’ Bathyporeia pelagica and Bathyporeia 
robertsont are included under Bathyporeia pilosa, Lindstrém, as forms of 
that species. 
Genus Argissa, Boeck (1870). 
Argissa hamatipes (Norman). (Pl. V. figs. 30, 31.) 
1868. Syrrhoe hamatipes, Norman, Report on Dredging among 
the Shetland Islands (in ‘ Report of the 38th Meeting of the 
‘British Association, 1868,’ London, 1868). 
1870. Argissa typica, Boeck, ‘Crust. Amphip. bor. et arct.,’ p. 45. 
1891. Argissa typica, G. O. Sars, op. cit., p. 141, pl. 48. 
‘This curious and somewhat anomalous Amphipod has been observed 
during the past autumn and winter in various parts of the Forth. It has 
