110 ON NEW AMOMA FROM WEST AFRICA. 
4. A. MANNII, sp. nov. Foliis oblanceolatis ellipticisve abrupte acumi- 
natis, petiolatis, scapis 2-3 unc., 3-2-floris, bracteis brevissime apicu- 
latis v. muticis, labello late obovato-rotundato. 
Hab. Corisco Bay, 1862, G. Mann. 
b. Labellum erectum, amplum, roseum v. purpureum. Foliis 
subtus minute pubescentia v. margine breviter pilosa. Stami- 
nodia libera. 
5. A. SUBSERICEUM, sp. nov. Foliis lenceolatis acuminatis, brevi-pe- 
tiolatis, subtus pubescentia venulis transverse intertexta subsericeis, 
scapis brevibus szpius bifloris, fructu ovato-lanceolato v. ovoideo, semi- 
nibus ellipsoideis nitidis. 
H25. Gaboon River and Corisco Bay, 1862, G. Mann. 
6. A. LIMBATUM, sp.nov. Foliis oblongo-lanceolatis, acumine tenui- 
ter caudatis, brevissime petiolatis v. sessilibus, subtus nervo medio atque 
margine brevissime ferrugineo pilosis, scapis brevibus 3-floris, fructu 
ovoideo, seminibus ellipsoideis nitidis. 
Hab. Fernando Po, 1859 and 1861, G. Mann. 
c. Flores parvi, lutei. Folia pilosa. Staminodia coadunata. 
7. A. PILOSUM, sp. nov. Foliis elongato-lanceolatis acuminatis, breviter 
petiolatis, sparse pilosis, scapis brevibus bifloris, labello limbo trans- 
verse elliptico subcordato v. fere integro, fructu parvo obovoideo in 
tubo persistente perianthii repente contracto, seminibus perparvis 
transverse rugulosis. 
Hab. Fernando Po, 1862, G. Mann. 
Y** Scapi breves, obconici, capitati, 10-15-flori. Folia glabra. 
8. A. cITRATUM, Pereira, Pharm. Journ. and Trans. ix. 313*. Foliis 
elongatis, oblongo- v. obovato-lanceolatis, breviter acuminatis, petio- 
latis, scapis crassis, bracteis superioribus margine crispatis, labello 
amplo erecto, fructu obovoideo limbo lato perianthii persistente con- 
tinuo coronato, seminibus obscure angulatis tuberculatisque, apice 
breviter conico productis. 
Hab. Gaboon River. 
* As no description of this species has yet been published, we include its 
diagnosis in the present paper. 
