358 UTRICULARIA ORLICULATA. ([Cuar. XVIII. 
are covered outside with the usual papille ; but they differ 
remarkably in the antenne 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 membrane; and the short 
ventral surface of the bladder, between the petiole and 
valve, is thickly covered with glands. Most of the heads 
had failen off, and the footstalks 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 and 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 decaying prey. 
Utricularia grifithii (Malay and Borneo).—The bladders 
are transparent and minute; one which was measured being 
only ;25, of an inch (+711 mm.) in diameter. The antenne 
are of moderate length, and project straight forward; they 
are united fur a short space at their bases by a membrane ; 
and they bear a moderate number of bristles or hairs, not 
simple as heretofore, but surmounted by glands. ‘he 
bladders also differ remarkably from those of the previous 
species, as within there are no quadrifid, only bifid processes. 
In one bladder there was a minute aquatic larva; in another 
the remains of some articulate animal; and in most of them 
grains of sand. 
Utricularia cærulea (India).—The bladders resemble those 
of the last species, both in the general character of the 
antenne and in the processes within being exclusively bifid. 
They contained remnants of entomostracan crustaceans. 
Utricularia orbiculata (India).—The orbicular leaves and 
the stems bearing the bladders apparently float in water. 
The bladders do not differ much from those of the two last 
species. The antenne, which are united for a short distance 
at their bases, bear on their outer surfaces and summits 
numerous, long, multicellular hairs, surmounted by glands. 
The processes within the bladders are quadrifid, with the 
four diverging arms of equal length. The prey which they 
had captured consisted of entomostracan crustaceans. 
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