our present conception of that genus. After prolonged 
study, it has seemed to us the wiser course to recognize 
this collection as constituting a new genus. 
A marked point of difference from Ornithocephalus is 
the sharply 3-lobed lip provided with a central longitudi- 
nal tube (open in front) and an overlying fleshy papillose 
linear-oblong band which is pubescent in front. More- 
over, there is a stout trilobulate rostellar process that is 
very different from the slender simple attenuate rostellar 
process of Ornithocephalus. In profile the column with 
its rostellar process and anther suggests the head and 
folded legs of a praying mantis. 
The name Oakes-A mesia was chosen to commemorate 
the foremost living orchidologist who has recently com- 
pleted a term of fifty years as teacher, mentor and bene- 
factor of Harvard University. 
Panama: Prov. of Coclé, summit of Cerro Pajita, hills north of El 
Valle de Anton, at 1000-1200 meters altitude, epiphyte on small 
trees in dwarf cloud forest, January 7, 1947, Paul H. and Dorothy 
O. Allen 4196 (Tyre in Herb. Ames No. 64880). 
Gongora armeniaca (Lind/.) Reichenbach filius var. 
bicornuta C. Schweinfurth & P. H. Allen var. nov. 
Herba florum colore et labelli hypochilio antice  bi- 
cornuto et medio supra conspicue dentato et columnae 
apice utrinque angulato a specie differt. 
Plant rather small, with an abbreviated rhizome. Pseu- 
dobulbs approximate, broadly ovoid, bifoliate, deeply 
plurisuleate, 2-3 cm. high. Leaves lanceolate-elliptic, 
acuminate, shortly narrowed to a subpetiolate base, pli- 
cate, with 8-5 nerves conspicuously exserted beneath, 
up to 12 cm. long and nearly 4 ecm. wide. Scape lateral, 
basal, pendent, filiform below, slightly thickened above, 
very loosely few- (up to 5-) flowered in the upper part, 
about 183 cm. long; rachis of raceme lightly fractiflex, 
[ 139 ] 
