* * 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, epichilio 

 ovali sequaliter tridentato cornubus falcatis sequali, co- 



lurana 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 lamellae 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 sequalibus, 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 hypochilium 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, Harrisonim from Brazil, 

 aurea from Guatemala, and aurantia from La Guayra, all 

 mentioned in Messrs. Loddiges rich catalogue, but undescribed 

 and unknown to me. 



