Plate LXII 



Caudal Gills of Nymphs* 



Fig. 48. Lestes vigilax. Fig. 53. Enallagma exsulans. 



Fig. 49. Lestes forcipatus. Fig. 54. Enallagma antennatum. 



Fig. 50. Lestes congener. Fig. 55. Enallagma traviatum. 



Fig. 51. Lestes unguiculatus, Fig. 56. Enallagma signatum. 



normal gills. Fig. 57. Enallagma pollutum. 

 Fig. 52. The same, dark gills. 



*One of the lateral gills removed in most eases. 



