As I believe it exists in this country in a living state I 
subjoin* its character, taken from specimens given me by 
Mr. Bateman, and from others in the herbarium of Dr. von 
Martius. 
Fig. 1. shews the petals and labellum, seen from one side ; 
2. ìs a view of the labellum from the inside; 3. is the column, 
with the pollen-masses adhering to the apex; 4. are the 
pollen-masses themselves, placed considerably below the upper 
end of their caudicula. 
In cultivating this species great care must be taken not 
to let too much water into the scales of the young shoots, for 
it is very apt to rot them, and so spoil the pseudo-bulbs. The 
temperature of the stove in which it is grown should be kept 
low in the cold and cloudy weather of winter, and gradually 
raised as spring advances. In fact it is very unnatural, and 
highly injurious to grow plants of this kind in a temperature 
of 70° or 80° in the dull weather of winter, for it is applying 
the stimulus of heat without the corresponding action of 
light. 
It should be potted in brown turfy peat well mixed with 
drainage, and treated generally as other plants of this kind. 
E * MAXILLARIA rhombea: acaulis, pseudobulbis ovalibus ancipitibus, 
folis . . . . . , vaginis acutis carinatis, bracteá ovario zequali, sepalis peta- 
lisque acutis, labello subrhombeo-trilobo : lacinià intermedia oblonga apicu- 
lata medio exaratá lateralibus nanis rotundatis appendice planá retusá lon- 
gioribus.— — Mexico, Oaxacee, Karwinski. 
