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rated lip, from the first and the last in its lip not having 
the edges incurved, and from all in the singular truncate 
form of this helmet-shaped organ, which is flattened from 
front to back and not laterally. 
5. C. fuliginosum (Lindl. in Bot. Reg. 1841. misc. no. 168); 
C. tridentati vultu, sepalis petalisque oblongis acutis re- 
flexis, labello cucullato carnoso integerrimo v. minuté 
serrulato patente, columnä brevi ecirrhosà apice in setam 
productä, antherá parva (effoeta ?). ? This sin- 
gular plant has the habit of C. tridentatum, but its flowers 
are in a dense erect raceme, and of a deep green colour, 
spotted with a dull blackish purple, so as to look as if 
they were soiled with soot. The sepals and petals are 
spotted, oblong, acute, and reflexed, so as to hang down- 
wards. The lip, on the other hand, is fleshy, hooded, 
stained with pale purple, and either entire at the margin, 
or very slightly serrated ; but it does not cover over the 
column as is usual in the hooded Catasetums: on the 
contrary it spreads away at almost right angles. The 
column itself is short, deep green, and produced at the 
point into a straight bristle, in front of which is placed a 
small and imperfect anther. Judging from the evidence 
we possess concerning C. tridentatum and cristatum, we 
should suspect it to be a male form of C. atratum, or 
some such species. That, however, must remain for 
future inquiry. 
6. C. luridum (Lindl. Gen. & Sp. Orch. p. 156. Bot. Reg. 
t. 1667. C. abruptum, Hooker in Bot. Mag. t. 5939. 
Anguloa lurida, Link in Verhandl. des Vereins. z. bef. 
des Gartenb. in dem Königl. Preuss. Staat. 1. p. 289. 
t. 6.); caulibus defoliatis angustis sulcatis, perianthio 
subgloboso parum maculato, sepalis petalisque oblongis 
apice rotundatis, labello cucullato carnoso mutico apice 
pauló producto truncato, racemo brevi nutante.—— 
- Brazil. ——Flowers green, globose, with a blunt shovel- 
shaped lip, having some brown spots on a yellowish 
ground. : 
7. C. semiapertum (Hooker. Exot. Fl. t. 213. ‚Bot. Reg. t. 
1708.); foliis oblongo-lanceolatis multiplicatis racemo 
compacto longioribus, perianthiis subpatentibus, labello 
galeato apice incurvo : lateribus denticulatis. —— Brazil. 
Flowers small, green, whole coloured. 
