688 Proceedings of the Royal Irish Academy. 



Microsc. Soc, October, 1893, p. 639. Euchlanis hicarinata, 

 Perty. H. and G., SuppL, p. 40, pi. xxxiii., 31. I found two 

 examples of this species in a marsh near Westport in 1894; in 

 April, 1893, I obtained it near Dundee; and so far as I 

 know, these remain the only records of its occurrence in 

 Britain. Mr. I^uttall's description and figures of this species 

 are very accurate and life-like, and far superior to the drawing 

 in Hudson and Gosse, which is incorrect in several particulars. I 

 agree with Mr. Nuttall that this species deserves to be transferred 

 from Euchlanis to Salpina, and that, as that writer has already 

 suggested, it must receive a new name, the specific appellation 

 licarijiata, being already preoccupied by Ehrenberg's species. 



Diplois daviesicB, Gosse. I found a number of examples of this hand- 

 some species in the lake at Castlebar, 1891 ; and in a small lake 

 east of Westport, 1892. 



Family Euchxantd^. 



Euchlanis lyra, Hudson. Many examples of this, the largest member 

 of the genus, occurred in a marsh to the east of Westport, 1891. 



E. hyalina, Leydig. H. and G., Suppl., p. 39. A number of 

 specimens from a small lake on the Knappagh road, 1894. 

 Eckstein {op. cit., p. 45) takes this species to be a variety of 

 E, triquetra, Ehrenb. 



E. triquetra, Ehrenb. Fairly plentiful in the small lakes near "West- 

 port, 1892. 



E. macrura, Ehrenb. A few examples from the lake at Castlebar, 

 1891 ; and a few more from two lakes to the east of Westport, 

 1892. 



Family Cathtpis'id.^. 



Cathypna lunci, Ehrenb. Common. 



C. rusticula, Gosse. Numerous in a few marsh-pools, near "Westport,. 

 and in vegetable debris from Castlebar Lake ; 1891, '92, '94. 



C. dionis, Gosse. H. & G., SuppL, p. 41, pi. xxxL, 38. This species 

 is easily identified by the dome-shaped posterior end of the 

 lorica and by the sharp-pointed toes. I got a few examples 

 only in a small lake on the Knappagh road, Westport, 1892. 



C. latifrons, Gosse. H. & G., Suppl., p. 42, pi. xxxi., 37. This 

 species can be readily identified by the geometric form of the 



