214 



Petals rather spreading, narrow-lanceolate, 3^ lines. 



Lateral index about 76. 



Labelhim sessile, prune-coloured, nearly 3 lines long; 

 2Dosterior two-thirds ovate, contracted at base, with undulate 

 or almost entire ujDturned margins ; anterior third separated 

 from posterior jDortion by a sharp constriction (or lateral 

 pinch) as in 1\ r/niri/e. Callous part not exceeding mem- 

 bianous, crossing constricted neck between anterior and pos- 

 terior portions, not quite reaching the tip, but sharply raised 

 as it approaches it. 



Lateral appendages nearly as high as rostellum, linear 

 with oblique or bifid upjoer margins, and rounded basal lobe 

 about half the height of the appendage. 



Anther on a level with rostellum ; no anther-point. 



Rostellum same height as anther-case, bifid when disc 

 is removed, but in the young flower ending in a well-marked 

 globular disc. 



Stigma large, reniform just below rostellum, occupying 

 whole width of column. 



Caudicle rather short. 



Ovary ellipsoidal, with some antero-posterior flattening. 



Found blooming early in October at Tailem Bend. 



11. P. occidentale, Rogers, PI. xii.B, figs, 1 to 9. 



A description of this Orchid appeared in the Trans- 

 actions of this Society (vol. xxxii., p. 11). The few 

 specimens on which I based it were mostly seeding, and one 

 or two points will bear modification after subsequent exam- 

 ination of a large niimber of specimens : — 



"Lateral sepals . . . united in distal fourth" should 

 be modified as follows : — Lateral sepals generall}^ more or 

 less connate but sometimes quite free, especially in mature 

 flowers or in very hot weather. On evei'y spike there are 

 always some flowers with connate sepals. 



The labellum is very shortly stalked, its flexion is rather 

 sharp ; the erect portion is gibbous with entire margins ; the 

 callous portion is slightly raised, ending abruptly midway 

 between the bend and the tip. 



The lateral appendages are bluntly linear and the stig- 

 matic surface is crescentic in shape. 



Lateral index about 76. 



12. P. patens, R. Br. PI. ix.A, tigs. 1 to 9, 

 A common plant varying from a few inches to about 2 



ft. in height. 



Flowers subtended by small ovate bract, green, greenish, 



or brownish, the membranous part of the labellum sometimes 



