Clare Island Survey — Fresh-water Entomostraea. 46 13 



Cyclops rubellus Lilljeborg. — This species was found in three of the gatherings 

 from Clare Island (Creggan Lough, L. Leinapolbauty, and marsh pond near 

 the light-house) and in Castlebar and Islandeady Loughs. New to 

 Ireland. 



Cyclops varicans Sars. — Only seen in the river at Westport and in Castlebar 

 Lough. New to Ireland. 



Cyclops serrulatus, Fischer. — Of the three forms into which G. serrulatus has 

 been divided by Lilljeborg, only two have been recognized during the 

 Survey. By far the larger number of specimens seen were of the " varius" 

 type ; but examples of the " macruroides " type were also taken in many 

 places. No examples of 0. serrulatus, in the strict sense, were seen any- 

 where ; and indeed this form of the species seems to be much the rarest 

 of the three in the British Isles. Specimens apparently agreeing with 

 each of Lilljeborg's three forms of " varius," viz. speratus, proximus, and 

 Irachyurus, were noted, but it is very doubtful if the separate recording 

 of these fine subdivisions of the species is of any real value. 



Cyclops affinis Sars. —This widely distributed though rather rare species is 

 now recorded for the first time in Ireland. On Clare Island it was found 

 in a little lough not far from Craigmore and on the mainland in 

 Castlebar Lough and in the river at Westport. 



Canthocamptus lucidulus Kehberg (= G. minutus Claus). — Only found in 

 Castlebar Lough. New to Ireland. 



Canthocamptus (Attheyella) crassus Sars. — The two localities on Clare Island 

 for this species are Creggan Lough and a little lough near the coast 

 west of Craigmore. The mainland station is Castlebar Lough. New 

 to Ireland. 



Canthocamptus (Attheyella) pygmaeus Sars. — It is a clear proof of the small 

 amount of attention hitherto paid to the fresh-water Copepoda of 

 Ireland that this species has not been previously recorded in the country. 

 Although not very common in collections made among the ordinary 

 vegetation of ponds, etc., it is usually to be found in wet moss from almost 

 any locality. Most of the specimens seen during the Survey were obtained 

 by washing wet mosses and liverworts. 



Canthocamptus (Attheyella) zschokkei Schmeil. — The only place where this 

 species was obtained on Clare Island was a small lough in the 

 neighbourhood of Craigmore on the south side of the island. It was 

 also found in moss from the sides of Croaghpatrick, and Mr. Kane found 

 it in a lakelet by the side of Eoonah Lough. 



