A rare species which is recorded only from Guate- 
mala. The type is said, by Reichenbach, to be in Lind- 
ley’s herbarium. 
3. Bothriochilus macrostachyus ( Lindl. ) L. O. 
Wilhams comb. nov. 
Coelia macrostachya Lindley in Bentham PI. Hartw. 
(1842) 92—Hooker in Bot. Mag. 79 (1858) t. 4712. 
Coelia macrostachya Lindl. var. genuina Reichenbach 
filius Beitr. Orch. Centr.-Am. (1866) 41. 
Coelia macrostachya Lindl. var. integrilabia Reichen- 
bach filius Beitr. Orch. Centr.-Am. (1866) 41. 
Bothriochilus macrostachyus is probably the common- 
est species of the genus. It is known from Mexico, 
Guatemala, Honduras and Panama. 
DUBIOUS SPECIES 
Coelia densiflora Ro/fe in Kew. Bull. 1906: 375. 
There is no material of this species (which obviously 
belongs to Bothriochilus) available for study in the Ames 
Herbarium. It is possible that it may be a synonym of 
Bothriochilus guatemalensis. 
4. A NEW GENUS OF 'THE ORCHIDACEAE FROM 
CENTRAL AMERICA, 
KPIDANTHUS L.O. Willams gen. nov. 
(Tribus Kerosphaereae, Serie Acranthae, Subtribus 
(/) Polystachyeae). Sepala similia, libera, lanceolata, re- 
flexa vel patula. Petala basi callo vel junctione petali et 
columnae callo ornata. Labellum integrum vel trilobum, 
basi columnae adnata. Columna brevis, teres, labello vel 
labelli callo adnata. Rostellum breve, emarginatum; cli- 
nandrium alatum. Anthera terminalis, operculata, incum- 
bens, biloculata. Pollinia duo, subglobosa, cerea, stipitata. 
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