EXPLANATION OF FIGURE 36. 



Tropidia quadrat a Say. 



/ A few areoles from one of the bodies on the surface of the egg- 

 shell, very highly magnified. 



2 A small area of the chorion or egg-shell, highly magnified, show- 

 ing the elevated bodies each of which is further ornamented with j 

 number of rounded areoles. 



j Dorsal view of an egg x 22. 



4 Anterior larval spiracle highly magnified. 



5 Dorsal view of larva x 6 ; A, antenna ; B, anterior larval spiracle, 

 just laterad of which are the two large lateral hooks ; C, posterior 

 respiratory organ, a-t each side of which are the three lateral fleshy 

 processes from the body-wall. 



6 End-view of posterior respiratory organ, showing the two stigmal 

 plates ; A, one of the palmately-arranged groups of plumose, inter- 

 spiracular hairs ; B, circular plate ; C, dorsal slit-like spiracle show- 

 ing characteristic shape and dentations ; much magnified. 



7 Anterior view of head-segments of larva, much enlarged, showing 

 arrangement of spines or thorns; A, the posterior row of thorns; 



B, anterior larval spiracle, situated in the middle row of thorns; 



C, the two pairs of large, lateral thorns, between which is the ante- 

 rior row of 'thorns; D, left antenna; E, the first pair of pro-legs; 

 F, the mouth-hood. 



8 Lateral view of puparium x 6 ; A, left pupal respiratory cornua ; 

 B, posterior larval respiratory organ, at the side of which are the 

 three lateral processes from the body-wall. Note also in the cephalo- 

 ventral region the thorns of -the larval head. 



9 A group of papillae from the pupal respiratory cornua, very highly 

 magnified, each showing a number of nodules arranged in a circle. 



10 Anterior view of puparium x 12; A, left pupal respiratory cornua; 

 B, anterior larval spiracle ; C, remnant of the larval mouth-hood ; 



D, the two large lateral thorns or hooks of the larval head. The 

 heavy dotted lines erclose the two pieces of the operculum which 

 split off for the emergence of the adult. 



/./ Side view of head of male, showing characteristic facial carina. 



12 Dorsal view of scutellum and abdomen of male, showing character- 

 istic markings. 



13 Wing. 



14 Hind leg shewing angular projection at outer end of femur. 



