VenrezureLa: Territory of Amazonas, occasional along Cafio Tama- 
Tama (a black water cafio on right bank of Rio Orinoco just above 
Tama-T'ama), at 150 meters altitude, epiphyte, ‘‘tepals old gold; lip 
basally old gold, apically white, the central lobe rose-streaked,’’ June 
23,1959, J. J. Wurdack & L.S. Adderley 43155 (Tyre in Herb. Ames 
No. 69472.—Territory of Amazonas, occasional along Rio Atabapo 
between Manacal and Guarinumo, at 125 meters altitude, epiphyte, 
**tepals externally dull red-brown, internally olive; lip white, longi- 
tudinally rose-streaked,’’ June 12, 1959, Wurdack & Adderley 42998 
(smaller flowers than those of the type). 
Maxillaria bolivarensis C. Schweinfurth sp. nov. 
Herba parvula, epiphytica, usque ad 24 cm. alta. Radi- 
ces numerosae, fibrosae, glabrae. Pseudobulbi approxi- 
mati, oblongo-ellipsoidei, valde complanati, unifoliati, 
usque ad 1.8 em. alti, vaginis distichis foliferis evanidis 
suffulti. Folia linearia, ad apicem acutum vel mucrona- 
tum plusminusve angustata, ad basim sessilem condupli- 
catam attenuata, circiter 6.5-23 cm. longa, 6.5-14 mm. 
lata. Scapi singuli vel plures, quam folia multo breviores, 
suberecti vel patentes, vaginis 8-6 anguste tubulatis 
maculatis celati. Flos pro planta magnus, segmentis 
paulo patentibus, viridis vel ochroleucus. Sepalum dor- 
sale lineari-lanceolatum, apice acutum, basi valde conca- 
vum, circiter 2.5-8.5 cm. longum et 5-6 mm. latum. 
Sepala lateralia triangulari-linearia, obliqua, ad apicem 
acutum angustata, 2.7-3.5 cm. longa, cum columnae 
pede mentum conicum usque ad 7 mm. longum forman- 
tia. Petala sepalis multo breviora, oblique et anguste 
lanceolata, ad apicem abrupte subacutum longe angust- 
ata, 2—-2.3 em. longa, basi 4-4.5 mm. lata. Labellum 
segmentis ceteris multo minus, in positu naturali leviter 
recurvum, tubulari-involutum et circiter 15 mm. longum, 
expansum obovato-oblongum et supra medium 5.5-7 
mm. latum, apice rotundato-subtruncatum cum mar- 
ginibus undulatis, prope apicem utrinque leviter con- 
strictum, basim versus longe angustatum:; discus callo 
