curvis, labello hemispherico concavo obsolete trilobo api- 

 culato supra columnam cucullato, polliniorum caudicula 



apice tuberculato.— — Mexico. Flowers large, as much 



as 3£ inches in diameter, pale lemon-colour, powerfully 

 aromatic. 



6. M. buccinator (Lindl. in Bot. Reg. 1840, misc. 9.) ; racemo 

 stricto oblongo, sepalis lineari-oblongis lateralibus reflexis 

 dorsali petalisque ovali-lanceolatis erectis, labello ungui- 

 culato carnoso nudo subrotundo-cuneato apiculato utrinque 



emarginato lateribus in buccinae formam revolutis. 



Mexico. Flowers pale green, with an ivory-white lip, 



whose sides are so rolled back as to give it the appearance 

 of a trumpet. The column is twisted sometimes to the 

 right, sometimes to the left. The habit and general ap- 

 pearance of the flowers, except in colour, is that of M. 

 atropurpureum. 



