ARRANGEMENT OF HAIRS 89 



those on the tarsus are arranged as in a 

 brush, and are used for brushing the pollen 

 from the flowers into the various receptacles 

 on the creature's legs and body. The brush 

 arrangement of hairs is noticeable in the 

 illustrations. 



The illustration (Fig. 23) is from a photo- 

 micrograph of 45 diameters ; the focal distance 

 was 70 inches, and the objective used was the 

 2 inch. 



6 * 



