Guascorr—A List of some of the Rotifera of Ireland. 83 
I found numbers of this species and their eggs within the eggs 
of water-snails, where they ceaselessly wriggled and twisted about, 
in company with Votommata gigantea ; and, notwithstanding some 
points of difference, I think it may yet prove to be identical with 
Furcularia micropus. The eye-speck, though present in them all, 
is so small that it might readily be overlooked, and now and then 
the shape was assumed which is represented in Pl. XIX. fig. 12, 
in the Monograph. Length variable, from ;4; to 3); of an inch. 
Habitat.—Within the eggs of water-snails. A pond, Co. 
Wexford. 
Diglena Hudsoni, sp. nov. 
[Pl. VII. fig. 3.] 
Sp. Ch.—Body cylindric, ventral surface flat, gibbous behind, 
deeply fluted; head rather broad; hood broad ; trophi forcipate; 
foot ventral; toes of moderate length, divergent, blade-shaped ; 
no eyes. 
When I first saw this creature it was sitting up on end; the 
head and neck withdrawn into the trunk, and looked so like one 
of the genus Rotifer that I nearly passed it by ; it began to move, 
however, when I quickly perceived my mistake. The body, which 
is remarkably soft and flexible, is deeply fluted longitudinally, 
rises abruptly behind, and falls into many transverse folds 
and wrinkles as it descends gradually to a flat and attenuated 
neck. The head, which slightly dilates, is furnished with a broad 
hood, in place of the usual pointed proboscis; a good-sized brain 
descends to the neck. No eyes were visible. The forcipate 
trophi are remarkably small and simple, and placed low in the 
neck. The integument was so overlaid with a fine sediment that 
the internal organs could be but dimly seen ; they appeared to be 
normal. The short foot is quite ventral in position, and habi- 
tually withdrawn; the toes are of moderate length, blade-shaped, 
pointed, and slightly decurved; united at the base they spring 
widely apart, seem to be immovable, and take no part in locomo- 
tion. Its manners are most peculiar, sluggish, and vermiform ; it 
ever makes fruitless efforts to advance by alternate elongation 
and contraction of the body, and at every movement the whole 
viscera are forced violently toward the head; at rare intervals it 
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