Plate LXI 

 Thoracic Structures of Adults 



Fig. 40. Hetaerina americana, ventral aspect of the meso- and meta- 

 thorax. 



Fig. 41. Hetaerina titia, dorsal aspect of meso- and metathorax. 



Fig. 42. Ischnura verticalis, ventral aspect of meso- and metathorax. 



Fig. 43. The same, lateral aspect of meso- and metathorax. 



Fig. 44. The same, dorsal aspect of meso- and metathorax. 



Fig. 45. Hetaerina americana, lateral aspect of meso- and meta- 

 thorax. 



Fig. 46. The same, dorsal view of meso- and mctaterga. 



Fig. 47. Ischnura verticalis, dorsal view of meso- and metaterga. 



