Hood — On the Rotifera of the County Mayo. 667 



F. algicola, Hudson. This species, also first discovered by me (Blair- 

 gowrie, 1882), was found fairly common in the Knappagh lakes on 

 each of my four visits. It invariably makes its home in the 

 globular alga Gloiotrichia pisum, attached to the stems of Ranun- 

 culus, Myriophyllum, and other aquatic plants. I have found 

 from one to twelve examples lodged in a single globule of the 

 alga, in which habitat it is frequently associated with Oecistes 

 mucicola. 



F. campanulata, Dobie (? F. prohoscidea, Ehrenberg). Many examples 

 on Chara and Utricularia in bog-pools; 1891, '92, '93. 



F. longicaudata, Hudson. Of this species (first discovered by me on 

 Tent's Muir in 1881), I found many specimens on Sphagnum in 

 bog-pools in 1889, '91, and some on Myriophyllum in a lake 

 near Westport in 1892, '94. 



F. trilolata, Collins. Four specimens on Myriophyllum from a lake 

 in the Knappagh district. This handsome species perhaps owes 

 its large size (iV - i^in.) to its viviparous habit. 



F.annulata, Hood, Science Gossip, Jan. 1888, p. 8. In this species 

 the corona is divided into three rounded lobes, the setae are very 

 short and delicate, and fringe the whole margin of the coronal 

 cup. I found a dozen examples on Sphagnum in a bog-pool 

 near "Westport in 1891, and some on Utricularia in 1892. 



F. hoodii, Hudson. Of this rare and beautiful species, first found by 

 me on Tent's Muir in 1882, I obtained three examples on Sphag- 

 num in a small lake,' Knappagh, 1891. Besides my own speci- 

 mens obtained in Scotland in 1882, '84, '86, and from the above 

 Irish locality, this species seems only to have been found once, 

 namely by Bilfinger in Wiirtemberg, 1890 (Jahreshfte d. Yer. 

 f. vaterl. Naturk. Wfirttb. 1894). 



F. gossei, Hood, Int. Journ. of Microscopy and ]N"at. Sci., April, 1892, 

 p. 73 ; cf. Pittock, Sci. Gossip, October, 1894. A few examples 

 of this rare species were found on Chara in a bog-pool in the 

 Knappagh district, 1892, '94. 



F. calva, Hudson. This is also one of the species first discovered by 

 me. Since I first found it in Fife and Forfarshire, it has been 

 got in Wiirtemberg by Bilfinger (op. cit., p. 35). I found a few 

 examples on Utricularia in a lake near Castlebar in 1889, and 

 again on Myriophyllum in one of the Knappagh lakes three miles 

 from Westport, in 1891. 



The above list of Floscules includes all the six species recorded by 



