MOUNT EORAIMA l\ BRITISH GUIANA. 63 



Eriopsis Scuomburgkii, Reiehb. I'. in Bonplandia, iii. (1855), p. 07. 



Pseudoeriopsis Schomburgkii, Reichb. f. in Linnsca, xxii. (1819), p. 85:$; R. Schomb. Reisen in Brit.- 



Guiuiia, iii. p. 1123. 



Roraitna, upper slopes, McCotmell §f Qnelch, Di. " Mowers brown." Schomburgk, 

 1679 a. — Also in the savannah of South Guiana. 



Houlletia roraimensis, Rolfe, sp. n. Polia elliptico-lanceolata, magna. Scapus 



arcuatus, 7-9-florus. Bracteoe oblongse, subobtusse, concuvse. Sepala orbiculari- 



elliptica, concava. Petala orbiculari-clliptica, plana. Labellum prof unde trilobum ; 



lobi laterales late oblongi, truncati, oblique apieulatis ; intermedins breviter 



unguiculatus, late trulliformis, apiculatus, callo transverso submembranaceo ad basin 



unguem sito. Columna clavata. 



Leaf petiolate. elliptico-lanceolate, acute, 1| ft. long, li in. broad. Scape arching 



(base not seen) ; raceme 7-9-flowered. Bracts oblong, subobtuse, concave, 6-7 lin. long. 



Pedicels 1-1J in. long. Sepals orbicular-elliptical, concave, 9-11 lin. long, 7-9 lin. 



broad. Petals orbicular-elliptical, nearly flat, 9-10 lin. long, 7-8 lin. broad. Lip deeply 



3-lobed ; side lobes broadly oblong, nearly truncate and obliquely apiculate, 6 lin. long, 



3^ lin. broad, connected at the base by a suberect, transverse, stout, undulate membrane, 



and with a somewhat similar connecting callus at the junction of the front lobe, but 



more distinctly toothed ; front lobe shortly and broadly unguiculate, broadly trulliform, 



abruptly apiculate, and with subacute lateral angles, 5 lin. long by nearly as broad. 



Column clavate, curved, 5 lin. long. 



Roraima, upper slopes, Ma Council Sf Quelch, 29. — Endemic. 



A very distinct species, nearest H. Lowiana, Reichb. f., in structure, but very different 

 in the. broad nearly truncate side lobes of the lip, and more like H. Brochlehurstiana, 

 Lindl., in habit. 



Catasetum discolor, Lindl. Bot. Reg. (1844), Misc. p. 31. 



Roraima, upper slopes, McCormell 8f Quelch, 6. — Also found in Guiana, Brazil, and 

 Paraguay. 



"•e* 



Maxillaria Coxxellii, Rolfe, sp. n. Eolia oblongo-lanceolata, acuta, basi in petiolum 



attenuata. Scapus foliis brevior, vaginis ovato-lanceolatis acutis subimbricatis 



obtectus. Bractea oblongo-lanceolata, acuta. Sepala subobtusa et minute apiculata ; 



sepalum lateralia triangulari-oblonga ; posticum oblongo-lanceolatum. Petala 



oblongo-lanceolata, subacuta. Labellum elliptico-oblongum, obtusum, subundu- 



latum, apice recurvum, callo oblongo apice dilatato truncato. Columna brevis 



Leaves oblong-lanceolate, acute, attenuate at the base, 6-8 in. long, 9-12 lin. broad. 



Scape 3g-4 in. long, covered with ovate-lanceolate acute sheaths, 6-9 lin. long and 



someAvhat imbricate at the base. Bract oblong-lanceolate, acute, 9-12 lin. long. 



Sepals subobtuse and minutely apiculate, dorsal oblong-lanceolate, 7-8 lin. long ; lateral 



triangular-oblong, 8-9 lin. long. Petals oblong-lanceolate, subacute, 7-8 lin. Ion?. 



Lip elliptical-oblong, obtuse, somewhat undulate, recurved at the apex, rather fleshy, 



