By Harold Gold-sack. 
NAT., VOL. XV. 
march 27tii, 1934. 
63 
they would be left on the prominent stigma while the insect en¬ 
joys the reward offered for its services. Thus is the flower served 
and the insect satisfied. 
fig. 1 .— Caladevia latijolia. natural size. 
Fig. 2.—Column (x 4). 
Fig. 3.—Nectar gland highly magnified. 
a , Position of nectar glands; b , normal cells which constitute 
surface of column; c\ glandular cells surrounding central hollow; 
d, central hollow; c % central lobe of labellum; g, semicircular row 
of calli on labellum; /?, side lobes of labellum; f } portion o? 
poinmuTn <on stigma. 
