Cuar. XVIII. CAPTURED PREY. 449 
also studded with papilla; those in the lower part are 
spherical and formed of four cells, as in the lower part 
of the utricle; those in the upper part are formed of 
two cells, which are much elongated downwards beneath 
their points of attachment. These two-celled papille 
apparently correspond with the bifid process in the 
upper part of the bladders of Utricularia, The narrow 
transverse orifice (0, fig. 29) is situated between the 
bases of the two spiral arms. No valve could be 
detected here, nor was any such structure seen by 
Dr. Warming. The lips of the orifice are armed with 
many short, thick, sharply pointed, somewhat incurved 
hairs or teeth. 
The two projecting edges of the spirally wound 
lamina, forming the arms, are provided with short 
incurved hairs or teeth, exactly like those on the 
lips. . These project inwards at right angles to the 
spiral line of junction between the two edges. The 
inner surface of the lamina supports two-celled, elon- 
gated papille, resembling those in the upper part of 
the neck, but differing slightly from them, according 
to Warming, in their footstalks being formed by 
prolongations of large epidermic cells; whereas the 
papille within the neck rest on small cells sunk 
amidst the larger ones. These spiral arms form a 
conspicuous difference between the present genus 
and Utricularia. 
Lastly, there is a bundle of spiral vessels which, 
running up the lower part of the linear leaf, divides 
close beneath the utricle. One branch extends up ithe 
dorsal and the other up the ventral side of both the 
utricle and neck. Of these two branches, one enters 
one spiral arm, and the other branch the other arm. 
The utricles contained much débris or dirty matter, 
which seemed organic, though no distinct organisms 
