Hood — On the Rotifera of the County Mayo. 681 



F. ensifera, Gosse. A few specimens from a quarry-pool near West- 

 port, 1892, '94. 



F. micropus, Gosse. Two examples of this blind, maggot-like species 

 occurred in water from a marsh near Westport, 1892. 



F. longiseta, Ehrenb. Frequent in the water and sediment of a small 

 lake on the Knappagh road, 1889, '94. 



F. cequalis, Ehrenb. I found a few examples of this species among 

 Utricularia in a bog-pool near "Westport in 1892, '94. 



F. spherica, Gosse. H. and G., Supplement, p. 26, pi. xxxi. 16. A 

 few specimens of this small species were got in a pool near West- 

 port Harbour, filled at high-water, 1892. 



F. lophjra^ Gosse. H. and G., Supplement, p. 26, pi, xxxi. 19. I got 

 six specimens in all from a marsh near Westport in 1889 and 

 1894. 



F. molaris, Gosse. H. and G., Supplement, p. 25, pi. xxxi. 14. One 

 isolated example in a quarry -pool in 1892 ; three more in a bog 

 near Westport among Sphagnum, 1894. 



F. holtoni, Gosse. Four specimens in siftings from Castlebar Lake, 

 1891. 



F. marina, Dujardin. A few examples in a lagoon by Westport 

 Harbour, 1891, '92, '94. 



Diglena forcipata, Ehrenb. I met with a solitary example of this hand- 

 some species in a bog-pool among Utricularia, and two more in 

 a mill-pond at Westport among Ranunculus aquatilis, 1891, '94. 



J), aquila, Gosse. H. and G., Supplement, p. 28, pi. xxxi. 20. I 

 found a few examples on several occasions in the bog-pools 

 near Westport in 1891, '92. This species was found in the 

 county Leitrim in 1885, in material sent by my son to Mr. 

 Gosse. 



J), suillia, Gosse. H. and G., Supplement, p. 29, pi. xxxi. 24. A 

 few specimens of this marine species occurred in the lagoon at 

 Westport Harbour, 1889, '91, '92. This lagoon, already more 

 than once referred to, is a piece of water cut off by the building 

 of the quay wall, through which, however, an opening or small 

 tunnel admits a partial ebb and flow. 



B. pachida, Gosse. H. and G., Supplement, p. 29, pi. xxxi. 23. Two 

 examples were found in the lagoon in 1894. This was the first 

 time that I had met with the species, but it agreed obviously 

 with Gosse's figure and description. 



