stove, in the month of August, 1840. Two other species of 
this Genus are now known in our collections, the C. ventri- 
cosum of Mr. Bateman’s splendid “ Orchidaceze of Mexico 
and Guatemala,” Tab. V., characterized by its pale, yellow- 
green, sulphur-coloured, spotless flowers, ventricose lip, 
and short column; and C. maculatum of Dr. Linptey’s 
equally beautiful “* Sertum Orchidaceum,” readily known 
by its very long raceme of copious but comparatively small, 
yellow flowers, spotted with purple, and by the singularly 
fringed lip. : : 
Descr. Pseudo-bulbs elongated, cylindrical, eight or 
ten inches to almost a foot in length, clustered, articulated 
and sheathed with the bases of former year’s leaves, pale 
ashy grey, at the apex terminated by a leafy crown, Leaves 
lanceolate, acuminate, membranaceous, striated. Scape 
from near the top of the pseudo-bulb, long, drooping, aris- 
ing from the side of the pseudo-bulb, bearing many flowers, 
no less remarkable in their form than in their size, Sepals 
unequal, the uppermost one, (or that corresponding with 
the column,) very narrow, linear-lanceolate, brownish- 
green, the two lateral ones much broader, oblongo- 
lanceolate, acuminate, greenish with transverse, brown 
blotches. Petals similar to them, but rather larger, spot- 
less, and both of them falcate and decurved. Lip lanceo- 
late, thick, fleshy in our specimen, ivory white tipped with 
yellowish-green, the base, or claw, where it unites with the 
column, spotted with red. Column remarkably long and 
slender, gracefully curved, like aswan’s neck, as the generic 
name implies, semiterete, deep purple, above broader and 
somewhat winged, green, spotted with purple, just below 
which the small anther-case is placed. 
