222 



VANDS^. 



Chap.TU, 



but it cannot be predicted whether they alight on the 

 surface which is uppermost in the drawing (fig. 33) and 



Fig. 33. 



Cycnoobes ventkicosum. 

 Flower viewed in its natural dependent position. 



0. column, after the ejection of 

 the pollinium together with 

 the anther. 



/. filament of anther. 



s. stigmatio cavity. 

 L. labellum. 

 j^ei. the two lateral petals, 

 Sep. sepals. 



then crawl over the margin so as to gnaw the convex 

 slirface, and in doing so touch with their abdomens 



