EXPLA:N^ATrON OF PLATE I. 



Unless otherwise stated, all the figures are enlarged^ the increase in size usually indicated. 



Fig. 1. — Caloptenus spretus, newly hatched, or in first larval stage, from side ; 1 &, same, 

 while yet pale, from above ; 1 a, antenna of same. 



-Second stage ; 2 a, antenna ; 2 &, thorax, from above ; 2 c, thorax, from side. 



-Third stage; 3a, antenna; 3&, thorax, from above; 3c, thorax, from side. 



-Fourth stage, or first pupal stage; 4a, antenna; 4&, thorax, from above; 4c, 

 thorax, from side. 



-Fifth stage, or true pupa; 5a, antenna; 5 &, thorax, from above; 5c, thorax, 

 from side ; 5 d, pupal exuviae, or last skin shed. 



-Sixth stage, or mature insect, the figure showing a typical male from the Per- 

 manent breeding-grounds; 6a, smaller form, as hatched in the lower and 

 moister country, where the species is not indigenous — natural size. 



-Typical female, with wings expanded — natural size. 



-Antenna of mature insect. 



-Enlarged thorax of mature insect, from above ; 9a, same, from side. 



-Anal characters of male, from above ; 10 a, do., from side ; 10 6, do., from 

 behind. 

 Fig. 11. — Anal characters of female, from side. 



Fig. 



2.- 



Fig. 



3. 



Fig. 



4. 



Fig. 



5. 



Fig. 



6.- 



Fig. 



7.- 



Fig. 



8.. 



Fig. 



9.- 



Fig. 



10.- 



