Giascorr—A List of some of the Rotifera of Ireland. oO” 
strange wagging movement denote the species unmistakably. It 
is very timid, and shrinks under cover on the slightest alarm. In 
one instance it was seated in a little nest in a small heap of flock 
adhering to the stem of a water-plant, from which it cautiously 
protruded its head, and wagged the long antenna in a knowing 
manner. 
Habitat.—A. bog ; a marsh drain, Co. Wexford. 
Rotifer hapticus, Gosse. 
[The Rotifera, vol. i. p. 106, Pl. X. fig. 3.] 
Only one specimen occurred during a whole summer’s research. 
Habitat.—A. marsh drain, Co. Wexford. 
Rotifer macrurus (2), Schrank. 
[The Rotifera, vol. i. p. 107, Pl. X. fig. 4. ] 
The body very large, smooth, and colourless, and well marked 
out from the foot; when extended there was always a waist-like 
attenuation just under the mastax, as described of Philodina 
roseola. In the intestine—a large oval chamber—a mass of 
coloured granules rotated, and close to the foot the beat of the 
contractile vesicle was plainly visible, occurring at distant intervals. 
The collar was thick and bulging, the lobes of the corona of 
splendid size, with a deep V-shaped sulcus between them ; when it 
was expanded, the column was not visible. The foot—composed 
of 7 or 8 joints—was stout, and capable of immense extension. 
The toe and spurs were of moderate length. Its manners were 
sluggish, remaining for lengthened periods as if asleep, then 
slowly unfurling the lobes of the corona, it set the cilia in motion 
for a short time, and then again relapsed into a quiescent state. 
There were two of this species close together, and in neither could 
I detect the slightest trace of eyes. Although not agreeing in all 
particulars with the description of the above-mentioned member of 
the genus given in the Monograph, it seems to approximate closely 
to it. 
Habitat.—A. pond, Co. Wexford. 
