Britiah Freshwater Ilarpactids. 193 



avtennules ; the secondary branches of the antennae are small 

 and one-jointed; the mandible-palp is small and composed 

 of two joints, the end one being smaller than the other; the 

 first pair of thoracic feet are shorty the two branches are sub- 

 equal in length, and the inner branches are two-jointed, as in 

 AttheT/ella, the end-joint being the shortest ; the inner 

 branches of the next three pairs are short and consist of two 

 subequal joints. 



Moraria Irevipes (G. 0. Sars) . 



1863. Ccmthocamptus hrevipes, G. (). Sars (non Mrazek & Scott), op 



cit. p. 24. 

 1889. Canthocamptus gracilis, S. A. Poppe (non C. gracilis, G. 0. Sars) 



Abhandl. d. naturwiss. Vereine zu Bremen, Bd. x. p. 544 t viii 



figs. 5-9. 

 1893. Moraria Anderson-SmiiJii, T. & A. Scott, Ann. & Ma'^- Nat 



Hist. (6)to1. vi. (Marcli 1893)p. 213, pi. viii. "' 



1893. OphiocamptKS Sarsi, Mrazek, " Beitrag zur Ivenntniss der Har- 



pacticidenfaima des Siisswassers," Zool. Jalirb. (May 1893), Abth. f. 



Syst., Geogr. u. Biol. d. Thiere, 7ter Bd. p. 113, t. v. tigs. 60-65. 

 1893. Ophiocamptus Sarsi, Scliiueil, Djutschl. freileb. Siissw.-Copep. 



ii. Tjil, Harpact. p. 86, pi. vi figs. 1-16. 

 1900. 3Ioraria Sarsi, W. Hartwig, " Die freileb. Oopep. der Proviuz 



Brandenburg," Forscliungsber. der Biol. Stat. z. Plou (Separat- 



abdruck), p. 11. 



This species has been obtained in lochs in Unst and else- 

 where in Shetland ; in Barra and North Uist Outer 

 Hebrides. It was obtained in Loch Morar, Inverness-shire 

 Loch Doon, Ayrshire, and other lochs in the west of Scotland • 

 and in lakes in Aberdeenshire, Midlothian, and elsewhere in 

 the east of Scotland. Mr. D. J. Scourfield has also taken it 

 near London. 



According to Lilljeborg * the form described by Herr Al. 

 Mrazek and myself under the name of Moraria [Ophio- 

 camptus) hrevipes (G. O. Sars) is not the species described 

 by Sars under that name, the true Canthocamptus hrevipes, 

 G. O. Sars, being, on the contrary, the form described by me 

 under the na.me of Moraria Anderson-Smithif and by Mrazek 

 under the name of Ophiocamptus Sarsi. It is interestiu'j- to 

 note that this species, which is still retained in the genus 

 Canthocamptus by Prof. Lilljeborg, was, by Mrazek and 

 myself, unknown to each other, considered to be sutficientl/ 

 distinct from the typical Canthocamptus to warrant its 

 removal to another genus. 



* ' Sveuska arter af. Familieu Harpacticidae,' pp. 44-48 (1902). 



