56 THE ROTIFERA. 
which are thick, decurved at the tips, and of a length equal to one third of the whole 
animal when extended. The pencil-sketch has not many details of organisation. 
The only note which the observer has added is the following :—‘‘ It has the power 
of drawing-in the first joint of the foot into the interior of the body; and has a peculiar 
manner of separating the pair of curved toes.” —P.H.G.] 
Length. Unrecorded. Habitat. Sandhurst, Berks (Dr. Collins). 
D. (?) LABIATUM, Gosse, sp. Nov. 
(Pl. XVIII. fig. 12.) 
[SP. CH. Slender, long, gibbous ; front furnished with a protrusile lip; foot long, 
with two minute furcate, virgate toes. 
Beyond what the mere outline suggests, as conveyed in the figures, I can give little 
information concerning this species. With much doubt I place it in the present genus ; 
and that only on the possibility that two obscure spots, dimly seen in the neck, may 
have been eyes. They may have represented the trophi. In fact my knowledge of this 
form rests on a single brief observation. I was examining an aquatic moss, which Dr. 
Collins procured for me in June 1885, when this little creature glided out. I sawina 
moment it was new to me, but my attention was already occupied. ‘There were in that 
live-box, at that instant, three or four Rotifera unknown to me ; as many papers were 
before me, on which I was labouring to reproduce the portrait of each, feature by feature, 
as I could catch it. Here was one more. It was a complete embarras des richesses. 
What could Ido? I hastily threw in the outlines here given, careful to secure correct- 
ness in what was produced, but deferring minute examination in the hope of seeing it 
again ; while I pursued the study of those already in hand. ‘The present subject, how- 
ever, found speedy concealment among the moss, and I could find it no more; nor has 
it ever reappeared. The form, particularly in the lateral aspect, recalls the owtré shape 
of Notommata caudata, with its long neck, elevated back, and slender foot ; but the re- 
semblance is only superficial. Its chief peculiarities are—(1) a slender parallel-sided, 
squarely-truncate proboscis or lip, projecting medially from the front, which is seen in 
the side view to be somewhat low in position ; it seemed retractile to some extent; (2) 
a long, slender, and tapering foot-joint, furnished with a furcate pair of toes, very 
minute, of equal thickness throughout, obtuse ; like tiny pegs. 
I can find nothing in Ehrenberg with which satisfactorily to identify it.—P.H.G.] 
Length. About 4}, inch. Habitat. Sandhurst, Berks (P.H.G.). 

[N.B.—In Dr. Collins’s Note-book are pencil-sketches of an evidently large animal, 
which may possibly be the Triophthalmus dorsualis of Ehrenberg. I have carefully 
copied the sketches (PI. xviii. figs. 14, 14a); but the details are not sufficient for dia- 
enosis ; and there are no descriptive notes. I have not myself met with anything like it. 
—P.H.G.} 
