wide. Lateral sepals linear-oblong, oblique at base, ob- 
tuse or subacute, about 6-6.8 mm. long and 1.5 mm. 
wide. Petals oblanceolate-oblong, adnate to the dorsal 
sepal, obtuse or subacute, lightly oblique, slightly longer 
than the dorsal sepal, about 1.7 mm. wide, 1-nerved. 
Lip tubular-involute in natural position, about 5—6.5 
mm. long: when expanded the lamina is elliptie-sub- 
quadrate below, is slightly narrowed near the apex and 
is then abruptly dilated to form a transverse lunate-reni- 
form terminal lobe which is about 3 mm. wide, rather 
abruptly and obtusely acute and rounded on each side. 
Spur very short, ovoid-conic or scrotiform, about 2-2.3 
mm. long, provided on the inner wall near the apex with 
two pairs of small calli. Column very small, with a deep- 
ly bilobed rostellar process. 
Hrythrodes marmorata differs from I. minor (Presl) 
Ames and from £7. ovata (Lind].) Ames in the shape of 
the lip. The inner surface of the short spur bears two 
pairs of calli as in several American species of Krythrodes. 
Cuzeo: Prov. Paucartambo, Disto. Marcachea, near Achiram, at 
2600 meters altitude, in moist humus, flowers white, July 30, 1939, 
C. Vargas 11163 (Tyee in Herb. Field Mus. No. 1051165; another 
Vargas collection (Gray Herb. No. 7752) bears the same data as Mar- 
gas 11163 (the type), but has 1592 as its number. 
Erythrodes multifoliata C. Schweinfurth sp. nov. 
Herba terrestris, a basi decumbenti suberecta. Caulis 
gracilis, glaber, foliis numerosis ornatus. Folia petiolata, 
elliptica vel lanceolata, acuta vel acuminata, basi late 
cuneata. Spica brevis, dense multiflora. Flores parvi, 
glabri, patentes. Sepalum dorsale oblanceolato-oblongum 
vel lanceolato-ellipticum, concavum. Sepala lateralia ob- 
lique oblongo-oblanceolata, margine anteriore longe pro- 
ducta. Petala lineari-spathulata. Labellum super medium 
utrinque angustatum; pars basalis concava, late obovata; 
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