* # * Labello apice tridentato, 
10. S. tigrina (Bateman Orch. Mex. & Guat. t. 7.); hypochilio 
subrotundo intus lamellis glandulosis radiato basi mutico 
apice sulco brevi aperto dente valido inflexo, epicbilio 
ovali aequaliter tridentato cornubus falcatis sequali, co- 
lumna lanceolata latissime alata. Mexico, near Xalapa. 
Much the finest of the genus. Flowers deep orange 
yellow, as much as eight inches in diameter, richly 
blotched with purplish brown. The excessively broad 
column, and the radiating toothed lamellse within the 
cavity of the lip, are peculiar characters. 
11. S. Martiana (Bateman in Bot. Reg. 1840. misc. 109. 
1843. t. 44. Orch. Mex. & Guat. t. 27 .); labello medio 
parum constricto, hypochilio brevi sessili scrotiformi, 
cornubus apice cirrhosis rectiusculis, epichilio oblongo- 
lineari obscure 3-dentato, columnse pubescentis subclavatse 
marginibus parum dilatatis.- Mexico. A most lovely 
plant, and quite different from all others. In the form 
of the base of its lip it approaches S. saccata, in its mark- 
ings S. tigrina , but it is readily known by its downy, 
wingless column, the linear middle lobe of its lip, and its 
bristle-pointed horns. The white flowers with rich crim- 
son spots are quite peculiar. 
12. S. saccata (Bateman Orch. Mex. & Guat. t. 15.) ; labello 
medio paulo constricto, hypochilio scrotiformi antice 
omnino aperto subtus gibboso ecarinato, apice et basi 
mutico intus radiatim glanduloso lamellato, epichilii ova- 
lis trilobi lacinia intermedia nana, cornubus semi-lanceo- 
latis latis planis incurvis scqualibus, columna glabra an- 
guste marginata. Guatemala. This has the smallest 
flowers in the genus, and almost always has the sepals 
and petals turned completely back on the ovary. They 
are greenish -yellow, regularly speckled, but not blotched, 
with brown, and are deep yellow at their base. The 
same colour extends to the lip, whose hypoch ilium is 
singularly saccate. 
There are probably other species even in cultivation ; more 
especially there remain for examination S. venusta, which is 
apparently a variety of S. Wardii, Harrisonice from Brazil, 
aurea from Guatemala, and aurantia from La Guayra, all 
mentioned in Messrs. Loddiges rich catalogue, but undescribed 
and unknown to me. 
