Giascorr—A List of some of the Rotifera of Ireland. ae 
the margins of the frontal aperture both on the dorsal and ventral 
sides are exactly similar to the figure referred to. The foliaceous 
expansions reach to the rounded edges of the lorica and there 
spread upward; they are always of a dark gray-brown hue. I 
have seen the sides of the lorica bent downward in some instances, 
and bent.acutely upward like a pair of wings at other times, when 
the progress was much like the flight of a bird on a windy day. It 
is sald to be exclusively marine. I have found it occasionally in 
bog-waters. | 
Habitat.—A. bog, a marsh drain exposed to tides, Co. Wexford ; 
a cattle-pond, formerly exposed to tides, Blenheim, Co. Water- 
ford. 
Brachionus urceolaris, Ehrenberg. 
[The Rotifera, vol. 11. p. 118, Pl. XX VII. fig. 6. ] 
Numbers of this handsome species occurred in the Cos. Water- 
ford and Wexford. 
Habitat.—Ponds. 
Brachionus rubens (?), Khrenberg. 
[The Rotifera, vol. ii. p. 119, Pl. XX VII. fig. 5.] 
With the exception of being much smaller than the foregoing 
species, the spines on the frontal margin being longer and less bent, 
the mastax placed more toward the centre of the body, there was 
little distinction between them. 
Habitat.—A pond, Co. Waterford. 
Brachionus Bakeri, Ehrenberg. 
{The Rotifera, vol. ii. p. 120, Pl. XX VII. fig. 8.| 
In this species the spines both before and behind are much more 
developed than in the figure given in the Monograph, and not only 
is the lorica facetted, but invariably stippled all over ; very handsome 
and of frequent occurrence. 
Habitat.—Ponds, Cos. Waterford and Wexford. 
Anurza serrulata, Ehrenberg. 
[The Rotifera, vol. ii. p. 124, Pl. XXIX. fig. 8.] 
Common. | 
' Habitat.—Bogs, Co. Wexford. 
