136 DR. LINDLEY ON WEST AFRICAN TROPICAL ORCHIDS. 
. The solitary specimen is very imperfect, but seems to belong 
to this species. 
9. A. ARCUATUM, Lindl. in Companion to Botanical Magazine, ii. 204; 
Pazxton’s Fl. Garden, ii. 120. no. 396. ic. xyl. 199. 
* Epiphyte. Calyx and corolla white. Banks of the Nun, Sept. 1860.” 
(521) Mann. 
This differs in no respect from the South African plant, except 
in being much more luxuriant. 
10. A. CAUDATUM, Lindl. in Bot. Reg. t. 1844. 
** Brass.” (1858) Barter. 
11. A. pisticHuM, Lindl. in Bot. Reg. t. 1781. 
Brass." (1854) Barter.—'* Onitscha.” (1862) Id.-—-* Prince's Island.” 
(1992) Id.—Banks of the Nun, Sept. 1860. (523) Mann. 
12. A. INFUNDIBULARE; caule flexuoso, folis lanceolatis obtuse et 
oblique bilobis, pedunculis filiformibus unifloris oppositifoliis, sepalis 
petalisque linearibus acuminatis, labello subrotundo-oblongo basi in- 
fundibulari in calcar incurvum filiforme pedunculo duplo longius pro- 
ducto. 
* Flowers large, white, and fragrant. Prince's Island." (2005) Barter. 
A beautiful species, belonging to the same set as A. gladiifolium, 
which it resembles on a large scale. The lip is about 21 inches 
long and broad ; from the tip to the point of the spur it measures 
6 inches. The sepals and petals are 21 inches long. 
13. A. ICHNEUMONEUM ; caulescens, foliis distichis late loratis cori- 
aceis apice obliquis, spicis longissimis grácilibus recurvis, bracteis 
membranaceis cucullatis, floribus distantibus, sepalis petalisque acutis 
caleare clavato stipitato multo brevioribus, labello lineari concavo 
truncato tridentato. 
* Epiphyte. Calyx and corolla white. Banks of the Nun, Sept. 1860." 
(520) Mann. 
A very fine species. Leaves 15 inches long, and 2 broad ; spikes 
of the same length. The flowers when unexpanded look very like 
some Ichneumon fly settled on the inflorescence. The two pollen- 
masses have each a long smooth acuminate caudicle ; and two small 
plates stand perpendicular on either side of the orifice of the spur. 
14. A.? sp. No flowers. 
** Prince's Island." (2019) Barter. 
A. Vanda-like plant, not unlike 4. caudatum, with narrow leaves. 
The capsules are solitary, clavate, angular, much shorter than the 
recurved linear canaliculate leaves. 
