curvis, labello hemispheric© concavo obsolete trilobo api- 
culato supra columnam cucullato, polliniorum caudicula 
apice tuberculato. — - — Mexico. Flowers large, as much 
as 3 J 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 buccinse 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. 
