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but it cannot be predicted whether they alight on the surface which is uppermost in the drawing (fig. 33) and

Fig. 33.

Cycnoches ventricosum.

Flower viewed in its natural dependent position.

sep.c. column, after the ejection of the pollinium together with the anther.

sep.f. filament of anther.

sep.s. stigmatic cavity.

sep.L. labellum.

sep.pet. the two lateral petals.

sep. sepals.

then crawl over the margin so as to gnaw the convex surface, and in doing so touch with their abdomens