of the lip, that intermediates between some or all may be 
- expected to occur. Of these the type is G. quinquenervis, 
Ruiz & Pav., which, according to Reichenbach, is a widely 
distributed species from Guatemala to Peru and Guiana, 
and for which that author cites (in Walp. Ann.1.c. 595), 
G. maculata, Lindl. Bot. Reg. t. 1616; Bot. Mag. t. 3687 ; 
G. fulva, Bot. Reg. vol. xxv. (1839) t. 51; G. maculata, 
var, alba, Bot. Reg. vol. xxvii. (1841) Mise. n. 101, and 
G. bufonia, var. leucochila, Bot. Reg. (1847) t. 17 as 
synonyms. 
_ The specimen of G. tricolor here figured was received at 
the Royal Gardens, Kew, in September, 1894, from Mr. 
R. Pfau, of San Jose, Costa Rica. It flowered in the 
warm Orchid House in February, 1896. 
Descr.—Pseudobulbs ovoid, two to two and a half inches 
long, deeply sulcate, with about six obtusely keeled ribs 
and rounded interstices. Leaves six inches long, ovate- 
oblong, acuminate, deeply five-grooved above, with as 
many stout ribs beneath, bright green. aceme pendulous, 
long-peduncled, six to ten inches long, lax-flowered ; 
peduncle and rachis slender, pale green, speckled; rachis 
compressed and angled ; bracts a quarter of an inch long, 
lanceolate ; pedicel with ovary one and a half to two inches 
long, spreading and decurved, speckled like the rachis. 
Flowers about two inches long from the tip of the dorsal 
sepal to that of the lip. Sepals very unequal, dorsal 
narrow, adnate for half its length to the back of the 
column, the free portion as long as the adnate, lanceolate, 
margins revolute, tip recurved; lateral sepals reflexed, 
ovate-lanceolate, dull red-purple, with revolute margins, 
and a stout pale midrib. Petals adnate to the sides of 
the column for their lower halves, the free portions 
spreading and upcurved, lanceolate, acuminate, speckled. 
Tip golden-yellow, projecting horizontally; hypochiliam 
cuneiform, saccate, truncate anteriorly, with acute angles 
and an awn on each side; base with two dorsal tubercles ; 
epichichilium as long as the hypochilium, broadly funnel- 
shaped, with a spur-like speckled tip, base dorsally gibbous. 
Column slender, speckled.—J. D. H. ag 
Fig. 1, Lip; 2, column and petals ; 3, top of column and anther ; 4, pollinia : 
—All enlarged. 
