Both genera are small plants with few-flowered racemes 
and relatively small leaves, though in Sphyrarhynchus 
these are much broader than in the present genus. 
Triceratorhynchus viridiflorus Swmmerhayes sp. 
nov. 
Planta pusilla, epiphytica; caulis brevissimus, circiter 
5 mm. longus, 38—5-foliatus, radices numerosas flexuosas 
emittens. /olia suberecta vel + reflexa, linearia, saepius 
+ curvata, apice obscure inaequaliter bilobulata vel in- 
tegra, acuta, lobulo breviore dentiformi, lobulo longiore 
usque ad 1.5 mm. longo, tota 1-5 cm. longa, 1-3.5 mm. 
lata, supra = concava, carnosula. Inflorescentiae ex ax- 
illis foliorum exortae, patentes vel horizontales, pauci- 
vel pluriflorae, usque ad 6 em. longae; pedunculus usque 
ad 2 cm. longus, gracilis, teres, vaginis paucis acutis 
brevibus instructus; rhachis pedunculo similis; bracteae 
breviter ochreatae, late ovatae, acutae, 1—1.5 mm. longae. 
Flores usque ad 9, 4-6 mm. distantes, patentes, virides 
ad flavi; pedicellus cum ovario 4-5 mm. longus, saepius 
medio + geniculatus. Sepalum intermedium lineari- 
lanceolatum, acutum, 4.25—-5.5 mm. longum, 0.75-1.25 
mm. latum, trinervium; sepala lateralia oblique lanceo- 
lato-ligulata, leviter curvata, subacuta, 5.25—6.25 mm. 
longa, 0.9-1.2 mm. lata, tri- vel subquadrinervia. Petala 
curvatim lineari-lanceolata, acuta, 4.25—5.25 mm. longa, 
vix 1 mm. lata, trinervia; omnia tepala patentia vel + 
recurvata. Labellum valde concavum, ambitu late lan- 
ceolatum, acutum, medio obscure trilobatum, lobis later- 
alibus erectis brevissimis rotundatis, lobo intermedio 
superne incrassato recurvato, totum 4.75—-5.5 mm. lon- 
gum, explanatum circiter 8.5 mm. latum, plurinervium ; 
calear ex ore angusto cylindricum, leviter incurvatum, 
apice obtusum, 5.5-8 mm. longum. Columna generis, 
circiter 0.75 mm. longa; anthera circiter 1 mm. longa; 
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