INSTARS OF GREEN BUG 



21 



culty. Antennal segments three, the first two subequal, the third about 

 six times the length of the first. The anal plates do not meet through- 

 out their length, their apices remaining apart (see Text-fig. 5, 1 and 

 Plate III Fig. 3.) 

 Length 0"3 mm. 



2nd Instar. 



Almost transparent showing distinctly the air tubes and their 

 larger ramifications. During this instar the anal lobes grow backwards 

 so as to become closely approximated behind the anal plates (see 

 Text-fig. 5, 2). The hind end is consequently narrower relatively to 



Text-Figuee 5. 



Outline of Coccus coleiitani during the different instars. 

 2. Second instar. 3. Third instar. 4. Adult. 



1. First instar. 



The anal filaments present. 



the front end than in the fii"8t instar. 

 Length 0'5 mm. 



3rd Instar. 



Semi-transparent with the loop seen ver>' faintly. The anal lobes 

 have grown still farther backwards (see Text-fig. 5, 3). The filaments 

 of the anal plates have disappeared and in their places appear three stout 

 setae. Abdominal segments still visible from above but only towards 

 the margin. Antennae as in previous instars. 



Length 1 mm. 



Adult. 



The bug is more opaque and yellowish. 



Owing to the farther 



