doubted whether they are not varieties of one ; and all the 

 more from the fact of S. gracile andKimballiaua having been 

 received from Borneo in the same clump by Messrs. Sander. 

 To decide this point a comparison of living specimens of all 

 from various localities is wanted, and the amount of dilata- 

 tion of the midlobe and side lobes of the lip must be studied ; 

 meanwhile I have provisionally adopted Mr. Rolfe's con- 

 viction that they will prove very distinct species, and I 

 have adopted his name for that here figured. 



I am indebted to Messrs. Sander for flowers of both 

 gracilis and Kimballiana, which they received from Borneo 

 through their collector, Mr. Forstermann. The figure of 

 the former species was from a specimen which they com- 

 municated to the Royal Gardens, and which flowered there 

 in February last. 



Descr.—Stem a pseudobulb, as thick as the thumb, 

 clothed with the remains of old leaf-sheaths, and sending 

 out roots thicker than a duck's quill. Leaves 2-3 ft. long, 

 lanceolate, acuminate, plaited, narrowed into a rigid elon- 

 gate petiole. Peduncle as long as the leaves, or longer, 

 stout, erect, with a few cymbiform obtuse sheaths ; raceme 

 short ; bracts boat-shaped, green, coriaceous, tip rounded ; 

 flowers few, two and a half in. diam., bright yellow. Sepals 

 broadly oblong, tip rounded, dorsally keeled and streaked 

 with red. Petals rather larger, obovate-oblong. Lip 

 shorter than the sepals, 3-lobed, hairy towards the base ; 

 lateral lobes incurved, obliquely spathulate-oblong, spotted 

 with red below the middle, tip truncate or rounded ; disk 

 with two erect dimidiate-ovate, and two small conical de- 

 curved auricles ; midlobe very narrow, fleshy, with a short 



W^ T° i f the baSe 0n each s^e, and a dilated 

 broadly obcordate tip.— J. J). H. 



AU?nI^r iih ° ne 8ldel ° be remo ^ 2, column; 3, anther; 4, pollinia:- 



