Plate LXII 



Caudal Gills of Nymphs* 



Fig. 48. Lcstcs vigilax. Fig. 53. Enalhigma ersulans. 



Fig. 49. Lestcs forcipnfus. Fig. 54. Enalhigma nnicnnatiim. 



Fig. 50. Lestes congtncr. Fig. 55. Enallagma traviatum. 



Fig. 51. Lestcs iingiiiculatus, Fig. 56. Enalhigma signatum. 



normal gills. Fig. 57. Enallagma polluium. 

 Fig. 52. The same, dark gills. 



*One of the lateral gills removed in most cases. 



