43i 
Insectivorous Plants (Part II). 
and 53 on the upper side of the leaf ; while a pitcher had 
8 2 over its exterior. In N. Phyllamphora there were 45, 
28, 24 on the under side, and 18, 29, 34 on the pitcher 
exterior. In N. khasyana there were 45, 76, and 61 on 
the under leaf side, 108 on the dorsal area of the pitcher 
between the wings, and 152 over the ventral part, or a 
total over the pitcher exterior of 260. In N. Mastersiana , 
a hybrid of the last, a fine pitcher showed a total of 2 66. It 
will thus be seen that the amount varies greatly, but as a 
rule the more highly evolved forms have the greatest number 
over the external pitcher-surface. The tendril of some 
species was entirely destitute of them, while others were 
richly provided. N. bicalcarata , for number and individual 
size of the glands, is pre-eminent. 
Attractive lid-glands. Little remains to be added regarding 
these. Usually flat and exposed, they may have a down- 
ward-growing epidermal flap, more or less covering them, 
which ensures retention of their secretion in the cavity thus 
produced or trickling of it towards the pitcher-mouth. But 
in several species a perithecioid modification may occur. Thus 
Dickson pointed out that N. laevis (N . Teysmanniana ), which 
has alluring perithecioid glands, shows these on the lid also, 
and this alone can distinguish the species from N. gracilis, with 
which it is often confused. In the aberrant species N. Pervillei 
the gland-tissue is deeply sunk in the lid -substance, and the 
secretion oozes out by an extremely minute orifice (Plate XX, 
Fig. 17). But N. Lowii furnishes us with the most striking 
condition. Opening by relatively small orifices among the 
bristles that beset the large lid are huge perithecioid glands 
often one-sixteenth of an inch in diameter. As seen in Plate 
XX, Fig. 1 6, the secreting layer is raised into several folds, 
and one might expect that the excreted material would be 
correspondingly abundant. I have never had an opportunity 
of seeing this species alive, being indebted to Messrs. Burbidge 
and Veitch for my specimens, but the former states from per- 
sonal observation that the liquid exuded is copious. The 
honeyed juice of all is readily sipped by insects. 
