it into the garden of the Horticultural Society. It is 

 very near S. oculata, from which it differs in the form 

 of the lip and especially in the very short ovaries, a cha- 

 racter pointed out to me by Mr. Loddiges. 



5. S. Wardii (Loddiges in Lindl. Sertum Orchidaceum, t. 20.) ; 



bracteis ovariis longe acuminatis duple- brevioribus, hypo- 

 chilio exacte oblongo depresso sessili antice intruso apice 

 carnoso fisso(nec aperte sulcato)vix dentato,basi utrinque 

 angulato, epichilio subrotundo-ovato integro, cornubus 

 semiteretibus falcatis incurvis subcirrhosis, columna late 



alata. Central America. This very fine plant is 



quite distinct from any of the supposed varieties of S. 

 oculata ; differing in the furrow of the anterior part of 

 the hypochilium being closed up and not open, and in the 

 exactly oblong form of the hypochilium; also from S. 

 Mvckeri in the absence of a strong tooth turned inwards 

 from the apex of the cavity of the hypochilium ; besides 

 which the angular condition of the base of the hypochi- 

 lium indicates an approach to S. quadricornis. The lip 

 is pale yellow, with a few fine specks, a deep yellow hypo- 

 chilium, the whole lower part of which is a deep chocolate 

 brown. The flowers are deliciously sweet. 



6. S. JRuckeri ; bracteis ovariis longe acuminatis duplo bre- 



vioribus, hypochilio obovato sessili antice intruso basi 

 mutico apice carnoso aperte sulcato et dente valido 

 inflexo aucto, epichilio subrotundo-ovato integro, cor- 

 nubus semiteretibus incurvis, columna late alata. 



Mexico. This is a noble species, with the habit of 



S. Wardii, and its general colour, except that it is 

 paler; but the epichilium is beautifully stained with pink, 

 and the eyes of the hypochilium are very faint. It is 

 distinctly separated by the peculiar form of the hypochi- 

 lium, which instead of being oblong is so much narrowed 

 to the base as to acquire an obovate form ; by the entire 

 want of lateral teeth on the margin ; and by the presence 

 of a very strong inflexed tooth, in which the wide, not 

 closed up, fissure of the apex of the hypochilium termi- 

 nates. We have received it from Messrs. Loddiges, and 

 have named it in compliment to Sigismond Rucker, Esq. 

 Junr., of Wandsworth, whose skill in the management of 

 this noble genus is well known to the cultivators of 

 Orchidaceae. 



