part 11.] THE INSECTS WHICH VISIT FLOWERS. 53 
-hindlegs was attained through a new habit, which rendered possible 
a great economy of collecting-hairs, and a great saving of time in 
emptying the collecting apparatus and preparing the larval food. 
This was the practice of moistening the pollen with honey before 
placing it in the collecting apparatus, so as to form one connected 
mass which could be easily removed from the collecting apparatus, 
and at once used to feed the larve. 
Macropis (1, Fig. 15) is in this way able to carry large balls 
of pollen mixed with honey on its hindlegs, though the tarsus and 
tibia are clothed with comparatively short hairs (2, Fig. 15). 
In Bombus (8, Fig. 15) we have a still farther advance. The 
pollen is kept entirely to the outer side of the hindlegs, which 
Fic. 14.—Lo¢éalisation of collecting-hairs on the tibia and tarsus. 
1.—Right hindleg of Dasypoda hirtipes, F. 2, seen from behind and within (x 7). 
2 —The same leg of Panurgus Banksianus, K. 9 (X 7). 
3.—The same leg of Anthophora (Saropoda) bimaculata, Pz. 9 (xX 7). 
Lettering as in Fig. 10. 
leads to a still greater economy.in collecting-hairs. For the outer 
surface of the tibia of each hindleg is perfectly smooth, and only 
surrounded at the edge with a fence of long hairs, some erect, some 
bent inwards, forming a kind of basket, in which the pollen-mass 
can be heaped high over the brim. So that not only is there a 
saving of collecting-hairs, and a saving of time in unloading the 
collecting apparatus, but the tarsal brushes of the hindlegs, which 
even in Macropis got charged with pollen, here resume their free 
use as brushes. 
Apis, finally, stands on a higher level than Sombus in the 
arrangement both of its collecting apparatus and its tarsal brushes. 
