A colony of these bees had covered the stems of a species of Asclepias, overgrowing the face of a high cliff ; and it took a sharp eye to distinguish their nests from clusters of the withered leaves of the climber. Composed of chips of leaves glued together, they were protected from the rain by a projecting roof, which for the purpose of concealment was cunningly shaped like the foliage of the plant itself. There
was quite a crowd of them, and as they circled about, their dark wings flashing in the sun as they darted out and into their nests, they reminded me of swallows about a church window.
Less obtrusive, more destructive, but full of interest, are the operations of the various colonies of termites or White-ants. It is impossible to observe the habits of those that bore in the