Explanation of Plate XVII. 



Fig. 1. Trepsichrois mulciber. Transverse section of brush bag, 



corresponding to the longitudinal 

 section shown at PI. XVI. fig. 6. 

 2. Heslia lyncaeus. Section of small brush. 

 3-5. „ „ Sections of large brush showing glandular 



nature of brush bag (3-5) and appear- 

 ance of hairs which arise therein. 



(All X 50.) 



