- Cuar. XVIII. UTRICULARIA AMETHYSTINA . 443 
having a brush of long sharp bristles at the apex. 
Other bladders included fragments of articulate ani- 
mals, and many of them contained broken pieces of a 
curious organism, the nature of which was not recog- 
nised by anyone to whom it was shown. 
Utricularia amethystina (Guiana).—This species has 
small entire leaves, and is apparently a marsh plant; 
but it must grow in places where crustaceans exist, 
for there were two small species within one of the 
bladders. The bladders are nearly of the same shape 
as those of Utricularia montana, and are covered outside 
with the usual papille; but they differ remarkably in 
the antennz being reduced to two short points, united 
by a membrane hollowed out in the middle. This 
membrane is covered with innumerable oblong glands 
supported on long footstalks; most of which are 
arranged in two rows converging towards the valve. 
Some, however, are seated on the margins of the mem- 
brane; and the short ventral surface of the bladder, 
between the petiole and valve, is thickly covered with 
glands. Most of the heads had fallen off, and the foot- 
stalks alone remained; so that the ventral surface and 
the orifice, when viewed under a weak power, appeared 
as if clothed with fine bristles. The valve is narrow, and 
bears a few almost sessile glands. The collar against 
which the edge shuts is yellowish, and presents the 
usual structure. From the large number of glands on 
the ventral surface an< round the orifice, it is probable 
that this species lives in very foul water, from which it 
absorbs matter, as well as from its captured and decay- 
ing prey. ” 
Utricularia grifithii (Malay and Borneo).— The 
bladders are transparent and minute; one which was 
measured being only 73%, of an inch (‘711 mm.) 
in diameter. The antenne are of moderate length, and 
