264 Annals of the Carnegie Museum. 



EXPLANATION OF PLATES. 



(All the figures on Plates 1-7 have been drawn with the aid of the drawing 

 camera by the author. Figs. 1-4, 17-43 are on tne same scale; 6-16 are on the 

 same scale ; 44-124 are on the same scale ; 125-127 are on the same scale ; 128, 

 129, 131-133 are on the same scale ; 130, 134-138 are on the same scale. ) 



Plate I. 



Figs, i, 2. Hetczrina fuscibasis, sp. nov., $. Chapada, abdominal appendages. 

 1, supero-internal-oblique view, left appendages. 2, profile view of the same. 



Figs. 3, 4, 5. Hetczrina charca, sp. nov., g. Chulumani, Bolivia, Nov. 30, 

 1898. 3, left superior abdominal appendage, dorsal view. 4, profile view, left ap- 

 pendages. 5, inner ventral view, apex of left inferior appendage. 



Figs. 6-16. Pectoral color-patterns of species of Lestes ; the left side only is 

 shown. 



6. Lestes scalaris, sp. nov., $, Cuba. 



7. Lestes spumarius, Selys, $ , Cuba. 



8. Lestes dichrostigma, sp. nov., $ , Sao Paulo. 



9. Lestes tricolor Erichson, $ , Bahia ? 



10. Lestes mediorufus, sp. nov., $ , SaO Paulo. 



11. Lestes pictus Hagen, $, Brazil. 



12. Lestes tenuatus Rambur, $ , Don Diego, Colombia. 



13. Lestes quadristriatus, sp. nov., $ , Chapada. 



14. Lestes paulisttis, sp. nov., <J , SaO Paulo. 



15. Lestes bipupillatus sp. nov., £>, Chapada. 



16. Lestes undulatus Say, $ , Penco, Chile. 



Figs. 17, 18. Lestes sca/aris, sp. nov., g, Cuba, by Gundlach, 1866. 17, 

 profile view left abdominal appendages ; 18, supero-internal oblique view of the same. 



Figs. 19, 20. Lestes spumarius Selys, g, Cuba. 19, profile view, left abdomi- 

 nal appendages ; 20, supero-internal oblique view of the same. 



