134 D. J. SCOURFIELD ON THE ENTOMOSTRACA OF NORTH WALES. 



In North Wales this is a moderately common species in the 

 mountain lakes and tarns. 



Cyclops viridis, Jurine. All the examples seen, representing 

 nine localities, were of the " gigas " type. 



Cyclops vemalis. Fischer. With the exception of the mere 

 mention of the name in this Journal among the lists of objects 

 found at the excursions of the Club during 1894 (ante, p. 74), this 

 species has not been previously recorded as British. It is, however, 

 a fairly common species, but has hitherto been included under the 

 comprehensive name of C. bicuspidatvs. In North Wales it has 

 been seen from five different localities. 



Cyclops bisetosus, Rehberg (C bicuspidatvs, Brady, " Rev. 

 Brit. Species of Cyclopida? and Calanida? "). This has only been 

 recorded from a bog pool on Y Garn and from the margin of Bala 

 Lake. 



Cyclops bicuspidatus, Claus, var. Lubbockii, G. S. Brady (G. 

 insignis, Brady, " Mon. Brit. Copepoda," and " Rev. Brit. Sp. 

 Cyclopidaa and Calanida3|"). There can be no doubt that the Cyclops 

 referred by Prof. Brady to C. insignis, Claus, is not really that 

 species, but the variety of C. bicuspidatus (=C. T/io?nasi, Herrick), 

 described by Rehberg as C. helgolandicus and by Schmankewitsch 

 as C. odessanvs. As, however, Prof. Brady had, as early as 1868, 

 described the form under review as C. Lubbockii (" On the Crus- 

 tacean Fauna of the Salt Marshes of Northumberland and 

 Durham," in "Nat. Hist. Trans., North, and Dur.," Vol. iii.), it 

 seems only right to use this name for the variety, instead of that 

 of either Rehberg or Schmankewitsch. The importance of having 

 a recognised varietal name in this instance depends upon the fact 

 that the variety is exclusively a brackish water form, while the 

 typical bicuspidatus is exclusively an inhabitant of fresh water. 



The following are the places where this variety has been found 

 in North Wales : — Brackish pond, Pwllheli (G. S. B.) ; brackish 

 pond, Pensarn (G. S. B.), and the marsh near Barmouth Junction, 



Cyclops languidus, G. 0. Sars. This has only been previously 

 noticed as British in lists of objects found at excursions given in 

 the previous volume of this Journal, pp. S98 and 400. It has now 

 been seen from a bog by side of Llyn Teyrn, and from Llyn y Gader, 

 Cader Idris. 



Cyclops bicolor, G. 0. Sars. (C. diaphanus, Scourfield, 

 " J. Q. M. C," Vol. v., p. 407). Like the preceding this has only 



