( 1<3 ) 



by its posterior and lateral edges, and by the pillars of a series 

 of arches that join the lateral affixed edges, slightly posterior 

 to the front margin (/ in Figs. 2 and 3). Two, three or four 

 stout pillars also act as strengtheners to hold the dome (e in Figs. 



V 



Fig. 1. 



Dorsal view of larva. 



2 and 4). Under this dome is a second cover, formed of finer 

 silk and composed of an upper and lower sheet, with their 

 edges fastened together all round (c in Figs. 2, 3]and 4). Witbin 



[xliii 

 this is a third cover closely attached, and similar to the second 



