NOTOMMATAD 4S. 29 
senta and Huchlanis deflexa ; these appear to be quite independent of the great brain 
proper. This is here triple; the middle lobe is pear-shaped, depending considerably 
below the mastax, with a long slender neck, quite pellucid, having a great red eye 
seated near its mid-length; on each side is a similar but shorter lobe. The trophi are 
of the pattern in N. awrita: each uncus is somewhat slender, and seems to comprise but 
two fingers; but, from the opacity of the parts, I am not certain. Under pressure, 
there seemed to be five, blade-shaped, and closely parallel. A very long esophagus 
leads to a wide and ample alimentary canal, divided by a sensible constriction into 
stomach and intestine, even when there is no diminution in their common outline. But 
this condition I saw rather suddenly much altered; so that the constriction was made 
as manifest as if a cord had been drawn tightly round. Both stomach and intestine 
were, in all specimens that I have seen, moderately full of dark yellow-brown granular 
food, interspersed with orange-coloured oil-globules, brilliantly refractive, most thickly 
at the pyloric end. The alimentary canal, when moderately filled with food, has a very 
peculiar appearance, as if divided by constrictions, both transverse and longitudinal, 
into squares. This is not accidental, but characteristic, beg seen in every example 
that has occurred to me, and distinguishing the species from all its congeners. A pair 
of ovate, colourless gastric glands are seated on the two shoulders of the stomach. 
The contractile vesicle is large; the branchie take the form of two very long, and very 
slender bags, transparent, but much corrugated, rather than of convoluted cords. I 
counted three vibratile tags, which happened to be all on the same side: one level 
with the eye, one with the lumbar seta, and one intermediate. The ovary appeared 
normal, The fusiform body ends in a well-marked tail, stiff, transparent, tapering to 
a point, but diminishing abruptly im the middle, forming a distinct shoulder there. 
Through it runs a pair of chain-like glands, resembling those in the toes, supposed to 
be mucous. A foot of two joints carries a pair of straight, short, conical acute toes. 
The manners of this striking creature were rather sluggish, though it moved and 
turned and twisted about restlessly. I did not see it swim. I had an interesting 
observation of the character of its food, and of its mode of feeding. The water was 
much stocked with the finer desmids and diatoms,—great Closteriums, Huastrums, 
Cosmariums, and the like. I caught my Copeus eating a great Epithemia turgida. He 
had evidently only just seized it with his protruded jaws, and had drawn one end of the 
desmid into his mouth, and was vigorously biting it. After a while, the frustule was 
pierced, as was seen by the cloud of dark granules that rushed down the mastax. All 
the contents were quickly sucked-in, till the shell was as empty and clear as a glass 
vessel ; to the manifest increase of the dark contents of the alimentary canal. Then it 
was contemptuously thrown away. Another had partly gnawed through a slender fila- 
ment of conferva, and had extracted, and was still extracting, the green granules from 
its interior, just at that part. Afterward I saw it devouring a small crescentic 
Closteriwm. This it ate up bodily ; and it occupied considerable time, even after the 
desmid was within the buccal funnel, and the end within its jaws. Thus it appears 
that this large species is a true vegetarian in diet. I have seen several more, all from 
a ditch in Sutton Park, Birmingham. All agree in these characteristic details. Each 
one has been quite clean, and totally devoid of any gelatinous covering.—P.H.G.] 
Length, ,; inch; width, ;4, inch. Hab-tat. Birmingham (T.B.). 
C. spicatus, Hudson. 
(Pl. XVI. fig. 2.) 
Notommata spicata 4 Hudson, J. Roy. Micr. Soc. 2 Ser. vol. v. 1885, p. 612, pl. xii, fig. 5. 
[SP. CH. Lumbar regions furnished with tubules, setigerous at their extremities : 
two occipital antenne ; brain threefold ; tail saccate. 
In this species we see two pairs of what we may call tentacles, of consimilar 
