STRUCTURE OF THE FEET 



115 



as the pulvillus is pressed down ; C and D, Fig. 135, making this 

 clear. The flattened-out pulvillus thus holds strongly while pulled, 

 by the weight of the bee, along the surface, to which it adheres, but 







FIG. 138. Cross-section through a tarsal joint of foreleg of Dyticus. J, showing the stalked 

 chitinous suckers (K), with a marginal bristle on each side: t, trachea; a, an isolated tubule or 

 sucker of Loricera, b, of Chlaenius, a, of Gicindela; d, two views of one of Jfeorophorus 

 germanicus, J 1 . 



comes up at once if lifted and rolled off from its opposite sides, just 

 as we should pull a wet postage stamp from an envelope. The 

 bee, then, is held securely till it attempts to lift the leg, when 



FIG. 134. Section through the tarsus of a Staphylinid beetle; the glandular or tenent hairs 

 arising from chitinous processes. A, section through the tarsal joint of the pine weevil, Ilylnl'iitx 

 abietis, showing the crowded, bulbous, glandular, or tenent hairs arising from unicellular glands. 

 This and Fig. 133 after Siinmermacher. 



it is freed at once ; and, by this exquisite yet simple plan, it can 

 fix and release each foot at least twenty times per second." (Bees 

 and Bee-keeping, p. 127.) 



Ockler divides the normal two-clawed foot into three subtypes : 



