ODONATA OF CONNECTICUT 307 



PLATE II 



Tracheal gills of Zygoptera 



1. Ischnura verticalis 



2. Chromagrion conditum 



3. Enallagma carunculatum 



4. Enallagma traviatum 



5. Enallagma signatum 



6. Ischnura posita 



7. Anomalagrion hastatum 



8. Enallagma civile 



9. Enallagma exsulans 

 10. Enallagma vesperum 



All greatly enlarged. 



