46 



6. uE.scJiifa rcrficdlis Hag. 



^schnajuncea verticalis, Calvert. 



This species ranges from Nova Scotia to the District of 

 Columbia, and has also been taken in Ohio, Illinois, and Cali- 

 fornia. At the East it is commoner than clepsydra, but not in 

 Illinois, having been taken only at Rock Island. The published 

 dates range from July 16 to October 18. Harvey found it com- 

 mon over meadows, bogs, and rivers in Maine. The nymph 

 has not been described or bred. We have in the Laboratory 

 collections, however, two lots of young specimens taken from 

 the marshy shore of Grass Lake, 111., which are clearly distinct 

 from the others here treated, especially in the form of the lat- 

 eral labial lobes, and which may be reasonably assigned to the 

 above species. 



VI. Anax Leach. 



The abundant and very uniformly distributed nymphs of 

 this genus may be separated from any of the others of this 

 family — which are usually much less common — by the fact 

 that they have only three pairs of lateral spines. In habit 

 they are quite unlike the lower 'teschnid genera, as they thrive 

 especially — even in small temporary pools and ditches — wher- 

 ever there is a luxuriant aquatic vegetation, through which 

 they clamber actively, preying on all sorts of water insects. 



The imagos are familar objects, large, bright green, the 

 wings with yellowish costal margins, circling about in swarms 

 or singly in search of small insects in the air. 



Anax Junius Drury. 



King of the dragon-flies, powerful and fearless, our great 

 Auax is a dominant type of its class ; and its worthy offspring, 

 omnipresent and omnivorous in the water world, is equaled 

 only by the large water-tigers [Cyhister) in strength, activity, 

 and ferocity. It has none of the sluggish obscurity of Caloj)- 

 tenjx, Gomphus, Boyeria, or Epivonlulia. It clings to water 



