Plate VI. 



Fig. 28. 



llapids, Muscjuash river. Habitat of Ciomphus brevis, Boyeria grafiana 

 Argia moesta putrida, etc. (Group la). 



Fig. 29. Small sandy beach with boulders, Station island. Habitat of Gomphus lividus, 

 G. exilis, Macromia illinoiensis, Didymops transversa, etc. (Groups la and lb. 



