4 1 1 
Insectivorous Plants (Part II). 
been noticed before, as it forms in the sunshine a most 
conspicuous glistening marginal belt, and also allures insects 
most powerfully to the inner lid-surface, as has often been 
verified by observation. The other species show the same 
massing of glands, but none so perfectly. The attractive 
or inner lid-surface, has hairs similar to those of 5. variolaris , 
but larger. Many glands are scattered among these, but 
further, as mentioned in the probable hybrid between this 
and 5. rubra , a long ventral continuation of glands, secreting 
a sweet but acid juice, runs down into the conducting surface. 
The hairs on the conducting and detentive surfaces resemble 
corresponding ones from .S', variolaris , but on a larger scale. 
While a moderate number of glands occur on the con- 
ducting, few or none are met with on the detentive surface. 
.S'. Drummondii. Alluring glands are more sparingly dis- 
tributed over the leaf-exterior of this than of any other 
species. The outer lid-surface has all or most of the 
epidermal cells raised into boss-like swellings directed slightly 
upwards, so that in this as in 5. variolaris an attempt at 
formation of external upward-directed hairs is shown. 
The attractive (inner lid) surface bristles with very long 
stout hairs, greatly indurated at the base, and carries attractive 
glands of ordinary structure. The conducting surface has the 
cells produced into downward-directed processes — which are 
pretty long above, but become greatly elongated below, as 
the detentive surface is reached. Attractive glands are found 
plentifully over its upper area, but these become finer till they 
quite disappear from the lower two- thirds of the area; their 
place is taken however by stomata set in the centre of a group 
of cells. On the detentive surface short and relatively delicate 
hairs are developed from many of the cells. Some stomata 
are also present. There is no proof as yet that the stomata 
are for water-excretion, but their presence in this species 
qualifies Zipperer’s assertion 1 that stomata are absent over the 
inner surface of the tubes. 
S', rubra . Alluring glands are pretty abundant over the 
1 Op. cit. p. 31. 
