of the Fishery Board for Scotland. 301 



Cyclopia. 

 Oithona setiger (Dana). 



1852. Acartia setiger, Dana, 'U.S. Expl. Exped.' 

 Habitat. — East of Inchkeith, among bottom tow-net material, several 

 specimens of this species were obtained in March of this year (1891). 

 They were readily distinguished from the more common 0. spinirostris, 

 Claus, by the extremely long and slender setse of the anterior antennae 

 and of the fifth feet. This appears to be the first British record of 

 Oithona setiger. 



NoTODELPHYID^J. 



Doropygus normani, Brady. 



1878. Doropygus normani, Brady, 'Mon. Brit. Copep.,' vol. i. 

 p. 136, pi. xxxii. figs. 1-14. 



Habitat. — In the branchial cavities of Ascidians, obtained off Mussel- 

 burgh by the trawl-net and dredge. This Doropygus is comparatively 

 common, and is the only species observed, but I do not often find it in 

 other parts of the Forth. I have examined many Ascidians from deep 

 water in mid channel east of Inchkeith, and find them much freer of 

 entomostracan parasites than those from the inshore waters of the south 

 side of the Firth. 



BUTRORIDiE. 



Enterocola eruca, Norman. 



1868. Enterocola eruca, Norman. Last Shetland Dredging 



Report, ' Brit. Assoc. Report,' p. 300 

 1878. Enterocola eruca, Brady, loc. cit., p. 147. 



Habitat. — In the intestine of Ascidians taken by trawl-net off Mussel- 

 burgh in March of this year (1891). Four specimens were obtained from 

 as many Ascidians — one in each Ascidian — and from inside the intestine, 

 thus differing in their habitat very markedly from the other entomostracan 

 parasites found in Ascidians. Dr G. S. Brady, to whom I sent a speci- 

 men, identifies it as the Enterocola eruca, Norman. Dr Norman obtained 

 a single specimen adhering to the intestine of Ascidia intestinalis while 

 dredging among the Shetland Islands, which appears to be the only 

 previous British record. Dr Norman, in his ' Report to the British 

 Association in 1868,' says that it is 'allied to Enterocola fulgens, Van 

 1 Beneden (" Recherches sur la Faune littorale de Belgique Crustaces," 

 1861, p. 149, pi. xxvi.), but is apparently distinct.' * 



Harpacticid^:. 



Jonesiella spinulosa (Brady and Robertson). 



1875. Zosime spinulosa, B. and R. ' Brit. Assoc. Report,' 



p. 196. 

 1880. Jonesiella spinulosa, Brady, loc. cit., vol. ii. p. 41, pi. xlviii. 



figs. 14-18 ; pi. xlix. figs. 14, 15. 



Habitat. — Largo Bay, dredged, several specimens, S $ . This is quite 

 distinct from Jonesiella fusiformis (B. and R.). 



Ectinosoma atlanticum (Brady and Robertson). 



1873. Microstella atlantica, Brady and Robertson, 'Ann. and 

 Mag. Nat. Hist.,' ser. 4, vol xii. p. 130, pi. ix. figs. 11-16. 



* Brit. Assoc. Report, 1868, p. 300. 



