Land, Fresh- Water, and Marine Crustacea. 345 



1892, and off St Monans, in 13 fathoms, on 22nd May 1901. 

 This curious form was also taken near Port Erin, Isle of Man, 

 by the late I. C. Thompson of Liverpool. 



Division CYCLOPOIDA. 

 Family CYCLOPiDiE. 



Genus (85) Oithona, Baird, 1843. 



201. Oithona similis, Claus. 



1866. Oithona similis, Claus, Copepoden-Fauna von Nizza, p. 14. 



Hab. — Generally distributed in the Firth of Forth, and 

 sometimes common. This is the form which, in my earlier 

 papers on " Scottish Marine Copepoda," is recorded under 

 the name of Oithona spinifrons, Boeck. 



202. Oithona (?) setigera, Dana. 



1849. Oithona setigera, Dana, U.S. Explor. Exped. [Amer. Jour. 



Sci. (2), vol. viii.]. 



1892. ,, ,, Giesb., Fauna u. Flora Golfes v. Neapel ; 



Monogr. xix. — Pelag. Copep., p. 548, 

 pi. xxxiv. figs. 3, 14, 41 et seq. 



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

 east of Inchkeith in March 1891, and again on 22nd April 

 1901. 



Genus (86) Cyclopina, Claus. 



203. Cyclopina gracilis, Claus. 



1863. Cyclopina gracilis, Claus, Die frei-lebenden Copepoden, p. 104, 



pi. x. figs. 9-15. 

 1878. ,, ,, Brady, Monograph, vol. i. p. 93, pi. xxiv. 



figs. 1-9; vol. ii. pi. xci. figs. 10, 11. 

 1900. ,, ,, Giesb., Mitth. iiber Copep., Mitth. a. d. Zool. 



Station z. Neapel, Bd. 14, p. 45. 



Hab. — Generally, though somewhat sparingly, distributed 

 in the Firth of Forth. I have taken it as far west as 

 Charlestown, as well as near the outside limits of the 

 estuary. 



