220 



Fig. 7. — Column from behind. x4: r, rostelhim ; c, caudiole; 

 ac, anther-case; lop, lateral appendage; hi, basal 

 lobe. 



,, 8. Column from side, x4: lettering as in fig. 7. 



,, 9. Column from front, x4: d, disc; st, stigma; other let- 

 tering as in fig. 7. 



Plate X.b. 

 Fig. 1. Plant (natural size); leaf destroyed. 



,, 2. Side view (lateral petals removed), x4: Z s. lateral 

 sepal; d s, dorsal sepal; I, lahellum ; lap, lateral ap- 

 pendage of column; a c, anther-case; r, rostellum ; 

 0, ovary. 



,, 3. Dorsal view (dorsal sepal and lateral petals removed), 

 x4: r, a c, o, lap, and Is as in fig. 2; mpl, mem- 

 branous portion labellum ; c pi, callous portion 

 labellum; 2? m, pollen masses (in the figure the 

 caudicle is seen attaching them to the rostellum) ; a;, 

 finger-like process between anterior and posterior 

 lobes of lateral appendage. 



,, 4. Lateral appendage showing (lap) anterior lobe; y, pos- 

 terior lobe; and x, finger-like process proceeding from 

 between the two lobes. 



,, 5. Top view, x 2 : 7 s. I, and d s as in fig. 2 ; Ip, lateral petal. 

 This figure is chiefly for purpose of showing the in- 

 curving of lateral petals; nv, ovary. 



Plate XI.a. 

 Fig. 1. Three-quarter view of flower, x2: Is, lateral sepals; 

 ds, dorsal sepal; Ip, lateral petals; I, labellum; ov, 

 ovary. 

 ,. 2. Front view of flower, x2: lettering as in fig. 1. 



3. Flower from below. x2: lettering as in fig. 1. 

 ,, 4. Flower from top, x2: lettering as in fig. 1. 

 ,, 5. Labellum three-quai'ter side view, x4: mpl, mem- 

 branous portion labellum; cpl, callous portion. 

 ,, 6. Side view column. x4: lap, lateral appendages; bl, 



basal lobe ; r, rostellum ; a, anther. 

 ,, 7. Column from back, x4: lettering as in fig. 6. 

 ,, 8. Column from front, x4: r and lap as in fig. 6; st, 

 stigmatic surface showing marked pollination-tube. 



Plate XI. b. 

 Fig. 1. Three-quarter side view of flower, x2: Z s, lateral sepals, 

 ds. dorsal sepal; ov, ovary; I p, lateral petal; mpl, 

 membranous part labellum; cp^l, callous ditto. 



,, 2. Flower from front, x2: lettering as in fig. 1. 



8. Flower from below, x2: Is, ds, I p, and ov as in fig. 1; 

 ?, labellum from below. 



,, 4. Flower from top. x2. showing spreading petals: letter- 

 ing as in fig. 1. 



,, 5. Labellum three-quarter side view, x4: mpl, mem- 

 branous part labellum; cjyl, callous ditto. 



,, 6. Column from front, x4: r, rostellum; st, stigma; lap, 

 lateral appendage. 



., 7. Column from side, x4: hi, basal lobe; c and d, caudicle 

 and disc; or. anther-case; other lettering as in fig. 6. 



,, 8. Column from back, x4: p, poUinia ; other lettering as 

 in fig. 7. 



