464 MK. H. N. BIDLEY ON THE 



Madagascar, Thouars. 



I have not seen this plant, and only know it from Thouars's 

 figure ; it approaches B. Thompsonii, especially in the shape ot 

 the column-teeth. The whole plant is about 4 inches in height; 

 the leaves, 4 lines in length, are called oval by Thouars, but are 

 rather oblong in the figure. 



Bulbophvllum Thompsons, n. sp. ; pseudobulbis ovato- 

 globosis mouophyllis rugosis nitidis, in rhizomate dissitis ; folio 

 oblanceolata obtuso coriaceo triunciali ; scapo nutante 4-uneiali, 

 vaginis 5, albis membranaceis ; racemo compacto ; bracteis parvis 

 ovatis acutis, ovarii dimidio a'quantibus ; floribus parvis ad 20 ; 

 sepalis subsimilibus deltoideis acutis ; petalis linearihus acutis, 

 subspathulatis dimidio sepalorum soquantibus ; labello oblongo- 

 lanceolato acuto carnoso flavo, apice fasce pilorum lninuto ; 

 columna brevi crassa, dentibus erectis longis acutis ; capsula 

 ovata oblonga sessili. 



Madagascar, Thompson ! in Herb. Brit. Mus. 



This plant is allied to B. nutans. Its leaf is 3 inches in length 

 by 1 across ; the scape is 4 inches high. 



B. ebectuh, Thouars, Orch. lies Afriq. t. 96; Lindley, Gen. 

 and Sp. Orch. PI. p. 53. 



I have seen no plant answering exactly to Thouars's figure, 

 which seems to be allied to the last species, differing however in 

 the short teeth of the column, shape of lip, and colour. It does 

 not appear to have been found elsewhere. 



There is a drawing of a Bulbophi/llum among Deans Cowan's 

 sketches which much resembles B. clavatum, Thouars, a species not 

 yet recorded from Madagascar, but differing in having but one leaf 

 to the pseudobulb instead of two. It was found at Ankafana. 



B. Hildebbandtii, Beichenbach fil, Otia Hamb. fasc. 2, p. 74, 

 Beravi Mountains, Rildebrandt, no. 2988 a, I have not seen. Its 

 affinity is stated to be with B. incurvum, Thouars. 



B. occlustjm, n. sp. ; rhizomate valido lignoso ; pseudobulbis 

 aggregatis paucis oblongis in vaginis magnis celatis diphyllis ; 

 foliis lanceolatis spathulatis coriaceis striatis semipedalibus, 

 quam scapum vix brevioribus ; scapo crassiusculo 1-2 vaginato ; 

 racemo nutante, bracteis magnis triangularibus, circiter 9, flores 

 ferme includentibus ; sepalis triangularibus acutis, lateralibus 

 ad basin connatis; petalis spathulatis mucronatis, apice hirtis, 

 Bepali dimidio a?quantibus ; labello unguiculato, lasi ad sepalos 



