448 Macfarlane . — Observations on Pitcher ed 
with No. i eye-piece. In S. variolaris the hairs are dagger- 
shaped ; each springs by a greatly enlarged base from an 
epidermal cell, and then rather suddenly narrowing, tapers 
into a fine point. The surface is finely striate, 25-30 striae 
appearing on surface-focussing. In size the hairs vary greatly, 
though all are much smaller than those of 5 . purpurea , there 
being 35-38 hairs visible at once under the same field as 
above noted. Similar examination of 5 . Swaniana shows 
3-4 hairs under field of view exactly like those of S', pur- 
purea, , and 1 5 _I 7 like those of S', variolaris , though both are 
rather feebler in form. The conducting surface in S', purpurea 
is a narrow zone about three- eighths of an inch deep, that of 
S'. Swaniana is one to one and a half inches, while that of 
S', variolaris is one and a half to two inches, according to the 
size of the specimens. In S. purpurea each cell of the conduct- 
ing surface is irregularly quadrangular or pentagonal in shape, 
and its lower edge is raised into a papilla, towards which 
a few converging striae unite (Plate XIX, Fig. 6). In 
S', variolaris each of the epidermal cells nearest the attractive 
surface is rounded-angular in shape, and its lower part is 
prolonged into a triangular hair-process measuring 20 \i long, 
while its surface is traversed by fine and dense striae. The 
corresponding hair-processes that grow out from the lower 
part of the conducting surface are greatly finer and more 
tapered, and are twice as long. In the hybrid the cells nearest 
the attractive surface are rounded-angular, though the angu- 
larity is more pronounced than in the last. Each cell has 
a tapered — scarcely triangular — hair-process from 12-15 ju 
long, which is traversed by striae, intermediate in fineness and 
number, between those of the parents. Deeper down they 
show the effect of the male parent, in that the hairs elongate 
till they are 25-30 /x long, while occasional cells may have 
processes 30-35 /x in length, thus indicating a greater unisexual 
luxuriance in these. 
The glandular region of S. purpurea is tolerably deep, quite 
glabrous, and its cells are equiradiate or transversely elongated 
with extremely wavy walls. The glands are abundant, 3-4 
