300 Proceedings of the Royal Physical Society. 



9. Pseudocyclopia caudata, T. Scott. 



1894. Pseudocyclopia caudata, T. Scott, Twelfth F. B. Kept., pt. iii. 

 p. 236, pi. V. figs. 1-8. 



Rah. — Off St Monaus in 1893 ; off the east side of Inch- 

 keith, in about 5 fathoms, in May 1901. 



10. Pseudocyclopia Gieshrechti, Wolfenden. 



1902. Pseudocyclopia Giesbrechti, Wolfenden, Jour. M. B. A. Ply- 

 mouth, January 1902, p. 370, pi. iv. 



Hab. — West of Queensferry ; rare. A single male was 

 dredged to the west of Queensferry, 17th November 1893, but 

 was only recently identified. A female (the one he describes 

 and figures) was taken by Dr Wolfenden with a surface tow- 

 net off the island of Bressay, Shetland, in March 1900. 



Family Centkopagid^. 

 Genus (7) Centropages, Kroyer, 1848. 



11. Centropages typicus, Kroyer. 



1848. Centropages typicus, Kroyer, Naturh. Tidsskr. (JST.S.), vol. ii. 

 p. 588, pi. vi. figs. 22-26. 



Hab. — Not uncommon in the seaward portion of the 

 estuary, especially during summer; but it appears to become 

 rarer in the winter months. 



12. Gentro'pages hamatus (Lilljeborg). 



1853. Ichtyophorha hamata, Lillj., De Crust, ex ord. tribus in Scania 

 occurrentibus, p. 185, pi. xxi. ; pi. xxvi. tigs. 9-12. 



Hcch. — This species, which is rather more common than the 

 last, has a seasonal distribution somewhat similar to it. 



Family Diaptomid^. 

 Genus (8) Diaptomus, Westwood, 1836. 



13. Diaptomus castor (Jurine). 



1820. Monoculus castor, Jurine, Hist, des Monocles, p. 50, pi. iv. 

 figs. 1-6 g^ seq. 



Hab. — In an old quarry on the Braid Hills, Edinburgh, in 

 April 1888 : this quarry is now included within the public 



