Guascorr—A List of some of the Rotifera of Ireland. 09 
Diglena circinator, Gosse. 
[The Rotifera, vol. ii. p. 50, Pl. XIX. fig. 4.] 
Not common. ‘The peculiar fold at the sides of the neck, seen 
from the dorsal aspect, was apparent in some, but not in all of 
them. The gibbous development of the body, and the long narrow 
neck, together with the widespread crescentic curves of the toes, 
afford good specific features. 
Habitat.—Ponds and bogs, Cos. Waterford and Wexford. 
Diglena giraffa, Gosse. 
[The Rotifera, vol. ii. p. 51, Pl. XIX. fig. 9.] 
I have met with but a single example of this rare species. It 
was stationary, and lifting the long neck and head high above 
the level of the body, craned it about as though taking stock of 
its surroundings; both extremities were frequently withdrawn 
into the tube-like central area of the body in a slow and deliberate 
manner, then as slowly protruded again. 
Habitat.—A. stream, Co. Wexford. 
Diglena caudata, Ehrenberg. 
[The Rotifera, vol. ii. p. 51, Pl. XIX. fig. 8.] 
This creature is indeed well described. One might think it 
had donned a garment at least three times too large for it, 
which fell into innumerable folds, and greatly impeded all its 
movements, which were remarkably slow ; when swimming in the 
open, it occasionally gave a little jump forward, and at intervals 
withdrew the foot and toes entirely within the body, just as one 
would draw in a piston through a tube, then pushed them 
deliberately out again. 
_ Habitat.—Several occurred from a pool, Co. Wexford. 
Diglena permollis, Gosse. 
[The Rotifera, vol. ii. p. 52, Pl. XTX. fig. 11.] 
Apparently a rare species. I found one within the empty shell 
of a Daphnia; the body was extremely soft and flexible, and 
