of the Fishery Board for Scotland. 
265 
Gammarus marinus, Leach. 
1815. Gammarus marinus, Leach, 'Linn. Trans.,' vol. xi. p. 359. 
1863. Gammarus marinus. Bate and Westwood, 'Brit. Sess.-eyed 
'Crust.,' vol. i. p. 370. 
Habitat. — Firth of Forth, inshore, in the vicinity of Culross. Gammarus 
marinus is easily distinguished by the very short inner ramus of the 
posterior pleiopoda. This species does not appear to have been previously 
recorded for the Forth, though it is not uncommon towards the head of 
the estuary, especially where there are sea-weeds between the tide marks. 
Photis longicaudata (Bate and Westwood). 
1863. Eiscladus longicaudatus, Bate and Westwood, 'Brit. Sess.- 
' eyed Crust.,' vol. i. p. 412. 
1877. Photis longicaudata, Meinert, 'Crust. Isop. Amphip. et 
' Decapoda Daniae.' 
Habitat. — Firth of Forth, off St Monans. Several specimens were 
obtained by dredging. 
Family Hyperiid^e. 
Parathemisto gracilipes (Norman). 
1868. Hyperia oblivia, Bate and Westwood (non Kroyer), 'Brit. 
1 Sess.-eyed Crust.,' vol. ii. p. 16. 
J 869. Hyperia gracilipes, Norman, ' Report on dredging among the 
' Shetland Islands (in Report of the 38th Meeting of the Brit. 
'Assoc., 1868.' London 1869). 
1887. Parathemisto longipes, Bovollius, 'Sytem. list of the Amphip. 
' Hyperiidea ' (Behang till K. svenska Vet.-Akhad. Handling- 
ar. Band. 11, No. 16. Stockholm 1887). 
Habitat. — Largo Bay. A number of specimens taken with tow-net. 
The specimens here ascribed to Parathemisto gracilipes, Norman, are 
small (4 to 5 mm.), apparently all £ , and most of them with ova. They 
differ in several respects from Parathemisto oblivia, Kroyer, and particu- 
larly in the carpus of the second Gnathopods being much less produced 
inferiorly, — the carpal process being only about one-third of the length of 
the propodos; — and in the pereiopods being less slender and not so 
elongate proportionally. Rev. T. R. R. Stebbing, who kindly examined 
one or two specimens for me, writes : — ' The Small Hyperid is apparently 
Parathemisto gracilipes, Norman, wrongly described and named Hyperia 
oblivia, Kroyer, in B. and W.' 
Euthemisto compressa (Goes). 
1865. Themisto compressa, Goes, '(^fvers. af Kgl. Svenska Vetensk 
' Akad. f0rhandl.,' p. 533, pi. xli. fig. 34. 
1870. Parathemisto compressa, Boeck, 'Crust. Amph. bor. et Arct.' 
(Saerskilt aftryht af Vidensk. Selsk. Forhandlinger). 
1 1878. Lestrigonus spinidorsalis, Sp. Bate, 'Ann. and Mag. Nat 
'Hist.' (May 1878), p. 411, fig. 2. 
1890. Euthemisto compressa, G. 0. Sars, 'Crustacea of Norway,' 
vol. i. p. 12, pi. v. fig. 2. 
Habitat. — West of May Island, February 1892. This species was 
obtained among tow-net material collected when trawling Station V. 
Attention was first drawn to it by its larger size and darker colour 
than Parathemisto oblivio. It is readily distinguished by the body being 
much compressed, by the dorsum being distinctly keeled, and by the two 
last segments of the percion and the two first of the pleon being produced 
