British Freshwater Harpactids. 1S7 



Canthocamptus horriduSj S. Fischer. 



1860. Canthocamptus horridus, S. Fischer, " Beitr. z. Kennt. d. Ento- 

 mostr.," Abhandl. d. math.-phys. Clai^se der koiiigl. bayer. Akad. 

 d. "Wissen^cb. 8tea Bandes, SteAbtli. p. 670, t. ii. tig-3. 57—59, 59 «. 



1880. Canthocamptus northumbricus, G. S. Brady, o}). cit. vol. ii. p. 57, 

 pi. xlv. ligs. 1-14. 



This species, which has been identified as the Cantho- 

 camptus horridus of S. Fisclier, appears to be rare in British 

 inland waters. The only Scottish record I liave for it is 

 Duddingston Loch, near Edinburgh ; Dr. and Miss Sprague 

 also record it from Edinburgh, but thej do not give any 

 locality *. Dr. Brady obtained it sparingly in the lake at 

 Bolaui, Northumberland, and Mr. D. J. Scourfield has taken 

 it near London. 



Canthocamptus gracilis, G. 0. Sars. 



1863. Canthocainptus gracilis, G. O. Sars, " Overs, af den indenl. 



Ferskv.-Copep.," Vidensk. i Christiania Forhandl. for 1862 (A.ftr.), 



p. 22. 

 1897. Canthocamptus tnornatus, T. Scott, Fifteenth Rep. Fishery Board 



for Scotland, pt. iii. p. 32-3, pi. ix. figs. 1-12. 

 1902. Canthocamptus f/racili.-i, hiUjehorg, Synopsis Spec, hucusqiie in 



aquis dulcibus Sueciae observ. Fam. Harpactic. p. 26, t. ii. tigs. 8-13 



(see footnote, p. 1). 



There appears to be no doubt that the species which I 

 described in 1897 under the name of Canthocamptus inomatus 

 is identical with the C. gracilis of G. O. Sars. I have found 

 it in several small lochs in Scotland, such as Rescobie Loch^ 

 near Forfar, Linlithgow Loch, one or two small lochs near 

 Edinburgh, Loch Achroy (Trossachs), and others. It has 

 been taken in the Isle of Wight by Mr. D. J. Scourfield, and 

 my son, Mr. A. Scott, has sent it to me from Lancasliire. 



Canthocamptus trispinosus, G. S. Brady. 



1880. Canthocamptus trispinosus, G. S. Brady, op. cit. vol. ii, p. 55, 

 pi. xlv. tigs. 15-22. 



This appears to be a rare species in the inland waters of 

 the British Islands, but it has apparently an extensive conti- 

 nental distriliution ; it has been recorded by Herr H. 

 Eehberg, Dr. S. A. Poppe, Dr. O. Schmeil, and Prof. W. 

 LiUjeborg. I know of no Scottish locality for C. trispinosus, 

 and the only station for it mentioned by Dr. Brady is the 

 Eiver Nene near Peterborough ; but Mr. D. J. Scourfield records 



* Trans. Edin. Field Nat. & Micros. Soc. vol. iv. (1900-1901). 



