48 Scientifie Proceedings, Royal Dublin Society. 
Notommata larviformis, sp. nov. 
[Pl. III. fig. 6.] 
Sp. Ch.—Body cylindric, tapering from the head; auricles 
oblong; foot long, one-jointed; toes minute. 
Glistening white. This little creature was on business intent, 
and so like a young larva that at first I was quite deceived. Having 
exhausted the resources of its hunting ground, however, it set 
sail across a tiny lakelet, striking out regularly with the long single- 
jointed foot, which bore: two tiny toes placed close together. 
The cylindric body tapered finely toward the foot, and from 
the head there issued, almost on a line with the frontal margin, 
a pair of oblong auricles. Alighting upon the opposite shore it 
twisted about with great activity, and was speedily hidden from 
sight. No eye or brain was visible. Length about =3,th of an 
inch. . 
Habitat.—A. bog, Co. Wexford. 
Notommata rubra, sp. nov. 
PSE: 50s 7a 
Sp. Ch.—Body long, cylindric, annulate; head narrow, cone- 
shaped ; auricles oblong; brain long, narrow, and coated with black 
at the extremity ; mastax small; toes small, cone-shaped. 
This species seems to approach closely both in figure and 
description to IV. torulosa, Pl. xxxu1t. fig. 20, of the Supplement. 
The body is a long, narrow cylinder, with many annular con- 
strictions fiom the neck to the foot, which latter is composed of one 
broad truncate joint with a depression in the middle, which gives 
it the appearance of two united bulbs, upon which are placed the 
small cone-shaped toes. The head tapers to a narrow cone, from 
the fore-part of which along clear tubular brain descends far down 
into the neck, passing over the mastax, which can be seen through 
it, its rounded end being of an intense blyck, not sacculated but as 
though it had been splashed with deep black ink. The oval mastax 
was bent toward the ventral surface. I am not certain as to the 
form of the trophi. A pair of long, narrow auricles were occasion- 
