lateral sepals spreading-recurved, obliquely ovate obtuse, 0*8 cm. 

 long ; odd sepal erect, as long- as the lateral, cucullate-galeate, 

 mouth oblong, produced at base into a pendulous subcylindrical 

 obtuse spur, a little longer than the ovary, the mouth of the spur 

 infundibuliform ; petals erect, obliquely ovate-oblong, obscurely 

 bilobed at the apex, 0"6 cm. long ; lip deflexed linguiform obtuse, 

 as long as the petals ; rostellum erect, gland-bearing arms obtuse, 

 auriculate on each side, with a deep cleft between it and the 

 stigma ; anther strongly resupinate ; gland solitary ; stigma a 

 little higher than the rostellum. 



Described from a living specimen under my number 4903, from 

 which also the drawing was made, and trom several dried speci- 

 mens. This plant has given considerable difiticulty in the past as 

 having been erroneously taken for D. rufescens Sw., and we are 

 indebted to Dr. Schlechter and Mr. N. E. Brown, of the Kew 

 Herbarium, for clearing up the difficulty by a careful examination 

 of Thunberg's type specimen in Swartz's collection. This establishes 

 the differences between that and the present species which may 

 be briefly expressed as follows : — (1) In this species the cleft 

 between the stigma and the rostellum is remarkably deeper, and 

 the stigma is slightly higher than the rostellum ; (2) the presence 

 of auricles on the rostellum and the obtuse gland-bearing arms ; 

 (3) the wider infundibuliform orifice of the spur. 



