greenish pink, and always marked by longitudinal lines 

 connected by other transverse ones, which thus form nume- 

 rous elevations, and make the flower look like a draught- 

 board. The two lower sepals have their inner edge at the 

 base rolled inwards like a horn. The labellum is triangular, 

 tongue-shaped, of a pure ivory white, bordered with deep 

 purple, and nerved with a deeper tint. Its edges are turned 

 downwards, and it is attached to the base of the column by 

 a narrow white claw. At the origin of the claw is a crescent- 

 shaped plate, hollowed out at its upper edge, and fringed 

 with long stiff* white hairs, which furrow downwards all the 

 part that supports them. 



This charming plant is found in gloomy damp woods on 

 the banks of the Rio de Pirapitinga, in the district of Bananal. 

 It is scentless, and flowers in June. 



Mr. RoUisson assures me that he received his specimen 

 from the same country as that which produced the Zygo- 

 petalon cochleare, figured in this work, plate 1857; if so, I 

 must have been misinformed as to Trinidad being the native 

 country of the latter. I am the more disposed to believe 

 that such was really the fact, because I find a drawing, of 

 what is apparently a luxuriant specimen of Z. cochleare, 

 among M. Descourtilz's collection, gathered in Brazil, on the 

 high mountains separating the province of St. Paul's from 

 that of Minas Geraes, and known by the name of the Manti- 

 queiras, where it flowers in the hottest season. 



It thrives very well in the orchideous-house at Tooting^ 

 where the atmosphere is kept saturated with moisture, and 

 the temperature is in winter from 60° to 70" Fahr., and in 

 summer from 70° to 90°. The house is of course well shaded 

 from the bright rays of the summer's sun. Like other kinds 

 of orchidaceous plants with thick fleshy roots, this requires 

 a considerable quantity of water, and should be freely 

 syringed. It is grown in a pot, but would probably succeed 

 quite as well if hung up, as the greater part of those with 

 fleshy roots do much better in that way. 



It is propagated by taking off" the young shoots, which it 

 sends out rather slowly. 



