84 Scientific Proceedings, Royal Dublin Society. 
abandons the crawling motion, and glides onward by means of the 
cilia, then again resumes it; occasionally it sits up on end, sinks 
the head and neck into the trunk, and relapses into the quiescent 
state in which I first found it. ‘The whole animal is of a pale 
amber-colour. Length about = of an inch, but capable of con- 
siderable extension. 
Habitat.—Among Cladophora flavescens, from a tide-pool, river 
Barrow, Co. Wexford. 
Diglenma dromius, sp. nov. 
[Pl. VII. fig. 4.] 
Sp. Ch.—Body sub-cylindric, long, slender, and slightly gib- 
bous in the middle; neck long; head long, broadest above, with 
a tapered proboscis projecting in front; trophi forcipate, broad, 
and short; foot of one or more (?) joints; toes long, slender, 
straight; brain ample, narrowing to the extremity; no eyes. 
This very slender and graceful species is the fleetest of its 
brethren, and as it glides swiftly and evenly along with head laid 
flat, the tapered proboscis projected in front, it darts it forth to 
the right and left with extraordinary rapidity. The long straight 
toes are finely pointed, and slightly decurved at the tips. They 
are set close together, and are held a little apart, and when the 
animal turns are flung wide asunder. A long and well-defined 
brain depends from the frontal margin; but I could discern no 
eyes. 
Its manners amusingly resemble those of some of the predatory 
beetles, and when alarmed it dashes into cover and there remains 
motionless until the fancied danger is past. 
Length, including the toes, =, of an inch. 
Habitat.—A. pond, Co. Wexford. 
Diglena aquila, Gosse. 
[The Rotifera. The Supplement, p. 28, Pl. XXXTI., fig. 20.] 
In every point similar to the above figure. 
There was a bunch of black globules situated over the forepart 
of the stomach ; a large and distinct brain was visible, but no eye. 
Habitat.—On a submerged leaf in a pond, Co. Wexford. 
