364 GENLISEA FILIFORMIS. [Cuar. XVIII. 
rows of hairs are so numerous that they seem superfluous 
merely for the sake of preventing the escape of prey, and as 
they are thin and delicate, they probably serve as additional 
absorbents, in the same manner as the flexible bristles on 
the infolded margins of the leaves of Aldrovanda. The 
spiral arms no doubt act as accessory traps. Until fresh 
leaves are examined, it cannot be told whether the line ot 
junction of the spirally wound lamina is a little open along 
its whole course, or only in parts, but a small creature which 
forced its way into the tube at any point, would be prevented 
from escaping by the incurved hairs, and would find an open 
path down tue tube into the neck, and so into the utricle. 
If the creature perished within the spiral arms, its decaying 
remains would be absorbed and utilised by the bifid papille. 
We thus see that animals are captured by Genlisea, not by 
means of an elastic valve, as with the foregoing species, 
but by a contrivance resembling an eel-trap, though more 
complex. : i 
Genlisea africana (South Africa).—Fragments of the utri- 
culiferous leaves of this species exhibited the same structure 
as those of Genlisea ornata. A nearly perfect Acarus was 
found within the utricle or neck of one leaf, but in which 
of the two was not recorded. 
Genlisea aurea (Brazil).—A fragment of the neck of a 
utricle was lined with transverse rows of hairs, and was fur- 
nished with elongated papillæ, exactly like those within the 
neck of Genlisea ornata. It is probable, therefore, that the 
whole utricle is similarly constructed. 
Genlisea filiformis (Bahia, Brazil)—Many leaves were 
examined and none were found provided with utricles, 
whereas such leaves were found without difficulty in the 
three previous species. On the other hand, the rhizomes 
bear bladders resembling in essential character those on the 
rhizomes of Utricularia. These bladders are transparent, 
and very small, viz. only +}, of an inch (+254 mm.) in length. 
The antenne are not united at their bases, and apparently 
bear some long hairs. On the outside of the bladders there 
are only a few papille, and internally very few quadrifid 
processes. These latter, however, are of unusually large 
size, relatively to the bladder, with the four divergent arms 
of equal length. No prey couid be seen within these = 
bladders. As the rhizomes of this species were furnishe 
with bladders, those of Genlisea africana, ornata, and aurea 
