pedunculo laterali, gracili, unifloro, usque ad 3 cm. longo; 
bractea Ovato-cucullata vel infundibuliformi, usque ad 7 mm. 
longa; floribus satis magnis, apertis, albidis vel viridi-albidis, 
labello intus obscure purpureo-maculato; sepalo positco valde 
concavo-cucullato, in ambitu subrotundo-elliptico, obtuso, 
usque ad 20 mm. longo, 16 mm. lato; sepalis lateralibus pat- 
entibus, ovato-ellipticis, basin versus excavatis, obtusis, 
usque ad 24 mm. longis, 10 mm. latis; petalis cum sepalo 
postico conniventibus, oblique late ellipticis, obtusis, usque ad 
20 mm. longis, 12 mm. latis; labello valde carnoso, complicato, 
in ambitu triangulo, lobis lateralibus inter se subquadratis, 
replicatis, deinde in lobo terminali, rhynchophoro, tubuloso 
continuis, disco a basi usque ad medium carina sigmoidea 
decoro, in medio callo denticulato, transverso ornato, toto 
labello usque ad 13 mm. longo, 10 mm. lato; columna cylin- 
drica, usque ad 9 mm. alta, basi in pedem, 8 mm. longam 
producta; polliniis 4, inaequalibus, obpyriformibus; ovario 
costato, glabro, usque ad 12 mm. longo. 
Ecuador: Prov. Pastaza, at confluence of Rio Verde and Rio 
Pastaza, STACY s.n.! type! (AMES). 
The flowers of these plants closely resemble those of Stenia 
pallida, having in common the general configuration of the lip. 
The method of adnation of the lip to the column-foot, the 
structure of the pollinia are those of the genus Chon- 
drorhyncha. This new species is perhaps closest to C. guttata 
(Rchb.f.) Garay from Peru from which it differs in having larger 
flowers without any spots, and differently proportioned floral 
parts. 
Chondrorhyncha guttata (Rchb.f.) Garay, comb. nov. 
Basionym: Stenia guttata Rchb.f. in Gard. Chron. n.s. 14: 
134, 1880. 
Type: Peru; without precise locality, DAvis s.n.! (W). 
I have seen about seven different collections of this rare 
species, all from Tingo Maria, Muna and San Martin regions of 
Peru. The narrower floral segments of the strongly maculate 
flowers readily differentiate it from C. stenioides Garay. 
oe | 
