122 
R. H. Compton. 
wards and round the base in the median plane, dying out a little 
above the middle of the dorsal surface. The main body of the 
bladder is composed of rather large parenchymatous cells, forming 
a wall about three cells thick; the middle layer is somewhat dis¬ 
organised. At the collar (peristome of Cohn) the wall is more 
massive, and furnishes a thick support for the valve. 
The valve (Fig. 8, C) is a membrane two cells thick, convex 
outwards, the cell-walls being much thicker than those of the rest 
of the bladder. The cells are chiefly hexagonal in outline, and their 
thickness is very small. The long bristles present in U. neglecta, 
&c., are absent in U. brachiata. From the edge of the valve a large 
number of unicellular processes project inwards. 
Lining the inside of the bladder are a number of quadrifid 
i 
processes of the usual type, with all four arms equal (Fig. 10, F). 
Gland-like papillae, similar to those on the axes and leaves, are 
present on the bladder in great numbers, particularly in the region 
of the collar : they are abundant on the under surface of the upper 
lip, and one terminates each of the tentacle-like projections. 
The upper lip (Fig. 8, B) is a broad flat structure composed of 
large parenchymatous cells. It bears in two groups six or eight 
uniseriate tentacles, each tipped with the spherical gland mentioned 
above. 
Air was present in many of the bladders. Small animals had 
been entrapped, and in many cases were partially decomposed : the 
chief prey seemed to be an Entomostracan. 
The development of the bladder appears to be similar to that 
in other species, as described by Goebel 1 and others (Fig. 8, D). 
The stalk upon which the bladder is borne resembles the 
creeping axes, but does not contain a xylem vessel: phloem, however, 
is present, arising from that of the main axis, and passing into the 
bladder. 
Bladders appear not to be present on the leaves, a feature 
shared by U. orbiculata among the tropical Asiatic species. The 
peculiar characters of the hairs or antennae on the upper lip con¬ 
stitute another point of contact with that species. 
The Peduncle. 
The peduncle (Fig. 6, ped.) arises from the middle of the 
depression or “ eye ” in the reproductive tuber, and grows vertically 
1 Ann. Jard. Buit. IX., 1891, Figs. 120, 121 (U. Warhirghi). 
