302 Part III—Ninth Annual Report 
1880. Ectinosoma atlanticum, Brady, loc. cit., vol. ii. p. 18, 
pl. xxxviii. figs. 11-19. 
Habitat.—East of Inchkeith, in surface tow-net, November 1890; 
frequent. This is a very small species, and consequently may be easily 
overlooked ; but though frequent in a tow-net collection in November, I 
have obtained it very rarely since. I am inclined to believe that some 
of the recent additions to the Forth Crustacea, at least in the case of 
pelagic species, are only occasional visitants, through having wandered 
out of their way, or been carried by currents within the confines of the 
estuary. I may state in proof of this that Thalestris serrulatus, Brady, of 
which several specimens were obtained in a surface tow-netting in 1889, 
has not since been observed by me anywhere within the Firth of Forth. 
Though this appears to be the first recorded observance of Hetinosoma’ 
atlanticum on the east of Scotland, it has been obtained from several 
places on the West Coast, especially the Loch Fyne district. Dr T. | 
Wemyss Fulton has obtained it in Upper Loch Fyne, and Mr I. C. 
Thompson, F.L.§., records it from Lower Loch Fyne; also from Loch 
Striven, off Kirn, and south of Arran, Firth of Clyde. It was first 
described by Brady and Robertson from specimens collected by Mr E. C. 
Davison in the open sea, to the west and south-west of Ireland. 
Tachidius discipes, Giesbrecht. 
1853. Tachidius brevicornis, Lilljeborg, ‘Decr.,’ p. 196 (non- 
Miiller). 
1880. Tachidius brevicornis, Brady, loc. cit., vol. ii, p. 20, 
pl. xxxvii. 
1881. Tachidius discipes, Giesbrecht, op. cit., p. 108, pl. ii. 
fig. 4; pl. iv. figs. 25, 28, &e. 
Habitat.—Brackish-water pools at the mouth of Cocklemill Burn, 
Largo Bay, July 1890. 
Canthocamptus palustris, Brady. 
1880. Canthocamptus palustris, Brady, loc. cit., vol. ii. p. 53, 
pl. xxxix. figs. 13-23. 
Habitat.—Brackish-water pools, May Island, 1889. This, though like 
the last, a brackish-water species, and inhabiting similar localities, need 
not be mistaken for it. Canthocamptus palustris is more slender, and the 
anterior antenne are longer and eight-jointed ; the fifth feet are also different, 
Dactylopus tenuiremus, Brady and Robertson. 
1875. eee tenurremus, B. & R., ‘ Brit. Assoc. Report,’ p. 
19 
1880. Dactylopus tenuiremus, Brady, loc. ctt., vol. ii. p. 115, pl. 
lvi. figs. 12-18. 
_ Habitat.—Kirkcaldy Bay, dredged 27th March 1891, readily dis- 
tinguished from other species of the genus by the form of the anterior 
antennz, which are slender and comparatively long. 
Dactylopus flavus, Claus. 
1866. Dactylopus flavus, Claus, ‘Die Copepoden-Fauna von N 1ZZa, 
p. 28, t. ii. figs. 13-16. 
1880. Dactylopus flavus, Brady, loc. cit., vol. ii, p. 116, pl. Ivi. 
figs, 1-11. 
Habitat.—With the last, and also Largo Bay. This Dactylopus is 
easily distinguished from the others by its broad depressed form; it is a 
small species, being little over half a millimetre in length. 
