73 



133. PLEUR0THALL1S vittata. 



P. vittata ; folio ovali crassissimo, caule tereti, spica disticha folio multo bre- 

 viore, fioribus tomentosis, sepalis oblongis planiusculis intus lsevibus supe- 

 riore longiore et angustiore sub apice calloso lateralibus acutissimis falcatis 

 semiconnatis, petalis obovatis acutis serratis, labello ovato carnoso obtu'o 

 laevi basi excavato biauriculato margine scabro, columna. petalorum longitu- 

 dine, clinandrio cucullato crenulato. 



A Mexican species imported by Messrs. Loddiges, and 

 one of the handsomest of this not handsome genus. The 

 flowers are slightly stained with dull purple ; the lower 

 sepals are broad and spotted with deep purple; and the upper 

 sepal is striped with the same colour. It is very like P. 

 aphthosa, from which it differs in the perfect smoothness of 

 the sepals on their inside, in their form and proportion, and 

 in the form of the petals. 



134. DIENIA cordata. 



D. cordata; folio solitario subrotundo cordato membranaceo-marginato, raceino 

 tenui elongato, sepalis lateralibus ovatis obtusis intermedio lineari-oblongo, 

 petalis linearibus, labello carnoso trilobato ; laciniis lateralibus auriculaefor- 

 mibus intermedio ovato. 



A native of Mexico, whence it was procured by Mr. Bar- 

 ker. It has a single cordate leaf, a slender spike of green 

 small flowers, and narrow ovate pseudobulbs. It is a plant 

 of no beauty, and differs from D. Myurus in the form of its 

 lip, the number and form of its leaves, and in its long slender 

 spike. 



135. TRIGONIDIUM Egertonianum. 



Bateman in litt. 



T. Egertonianum ; pseudobulbis ovalibus compressis sulcatis diphyllis aggregatis, 

 foliis ensiformibus pedunculis subasqualibus vel brevioribus, sepalis ovali- 

 lanceolatis acutis (lateralibus reflexis), petalis lineari-lanceolatis acutiusculis 

 apice callosis, labello trilobo medio calloso petalis triplo breviore, — J. B. 



" A native of the Bay of Dulce in Honduras, where it 

 was discovered by G. U. Skinner, Esq. to whom I am in- 

 debted for its possession. It is a very distinct species of a 

 most singular genus, and 1 have, therefore, not hesitated to 



K. October, 1838. / 



