50 Scientific Proceedings, Royal Dublin Society. 
Copeus pachyurus, Gosse. , 
[The Rotifera, vol. ii. p. 81, Pl. XVI. fig. 4.] 
Several of this interesting species occurred from bogs in the 
Co. Wexford, the sense organs always reduced to mere inconspi- 
cuous tubercles, the mastax and trophi of enormous size ; the sub- 
globose saccate tail affords a good feature for identification. 
Habitat.—A bog, Co. Wexford. 
Copeus caudatus, Collins. 
[The Rotifera, vol. ii. p. 33, Pl. XVI. fig. 5.] 
A pair of these creatures lay together dead; the foot in both 
was partially withdrawn. It is strange that my first acquaintance 
with the species should bear such marked testimony to their 
peculiar habit of associating in pairs, noticed by Mr. Gosse. 
They were both females and of the same size. 
Habitat.—A pond, Co. Wexford. 
Copeus Cerberus, Gosse. 
[The Rotifera, vol. 11. p. 84, Pl. XVI. fig. 3.] 
This lumpish creature much resembled a maggot. The body 
was china white, the stomach full of food almost black in hue. 
The shape of the face was very undefined, the ciliary wave of 
the disc ever changing in shape and position, the interior surface 
somewhat protruding beyond it; there were no apparent auricles, 
but I could see the circular wave of cilia rotating upon the lateral 
areas, the eye (?), placed vertically across the origin of the 
lowest brain was of a black hue, not red, as described by Mr. 
Gosse. The mastax was small, and the trophi shaded from 
orange colour into black at the tips. Several of the species 
occurred. 
Habitat.—A bog, Co. Wexford. 
Proales decipiens (Ehrenberg). 
[The Rotifera, vol. ii. p. 86, Pl. XVIII. fig. 6.] 
The annulations of the body and the larva-like motions of this 
little creature are unmistakable. 
Habitat.—Drains and bogs, Co. Wexford. 
