ovate acuminate nearly as long as the flowers ; odd sepal lan- 

 ceolate acuminate concave or almost saccate towards the base ; 

 side sepals ovate concave spreading; petals nearly semi-orbicular, 

 the upper margin bilobed, rounded below, very concave, limb of 

 the lip saddle-shaj)ed with distinct hanging flaps and a narrowed 

 point, appendage fleshy, produced into two large erect ear-like 

 lobes at the top of the column, thence suddenly bent back- 

 ward and downward behind the column into a somewhat subulate 

 curved ridged acute piece;* arms of the rostellum horizontal; 

 stigmas 2 ; ovary obovate trigonous. 



Described from several living and dried specimens. Colour of 

 the flowers pale sulphur-yellow ; stem and leaves very pale. A 

 delicate and very distinct species, not easily to be mistaken for 

 any other, although Thunberg marked it as a variety "minor" 

 of P. cathoUcum in his herbarium, to which in the general 

 structure of its lip it is undoubtedly allied. Mr. N. E. Brown, 

 who saw and examined the orchids of Thunberg's herbarium, has 

 noted that the specimens were " 1-, 2- and 3-flowered." I have 

 gathered about a hundred specimens of which by far the greater 

 part were 1-fl., a few 2-fl., but I have never seen any with more 

 than 2 flowers. 



- By an error in the Orchids of the Cape Peninsida, p. 184, the descrip- 

 tions of the lip and the appendage were transposed, thus causing confusion. 



