344 PR0CEEDIXG8 OF THE NATIONAL MUSEUM. vol.49. 



21. AESHNA MULTICOLOR Hagen. 



This species is abundant about tlio alkaline ponds from June till 

 August, with the height of the season during July. Both it and 

 californica are wide fliers, being found at times several miles from the 

 nearest water. 



22. AESHNA UMBROSA OCCIDENTALIS Walker. 



Tliis species occurs with palmaia on the streams of the valley, 

 having about the same season and habits. It may emerge a week or 

 two later, as I have tenerals from Satus Creek taken on August 17, 

 when palmata was in fresh full colors. The teneral specimens of 

 umbrosa are a rich deep chocolate including the upper half of the eyes, 

 which shade into gray below. The tenerals hang on foliage frequently. 

 The females of the species oviposit in the brush and bushes which he 

 partially submerged in the edges of the quiet side pools. The exuviae 

 are found on the brush and tree roots about the deeper pools. 



23. AESHNA PALMATA Hagen. 



Occurs on streams from August until frost. Perhaps a week earlier 

 than umbrosa occidentalis in emerging. As in eastern Oregon, it is 

 about one-third as abundant sls umbrosa occidentalis and has appa- 

 rently identical habits. 



24. MACROMIA MAGNIFICA McLachlan. 



This species occurs on Satus Creek, south of Alfalfa. It occurs 

 during July and August. 



25. CORDULIA SHURTLEFFI Scudder. 



I took one female on Satus Creek, south of Alfah'a. 



26. SOMATOCHLORA SEMICIRCULARIS (Selys). 



I have not taken tliis in the territory described at the beginning 

 of this Hst, but found it common at Bumping Lake, one of the head 

 waters of the Yakima River.^ 



27. LIBELLULA FORENSIS Hagen. 



This is the most abundant Libellula about the ponds of the Yakima 

 Valley. It occurs from June to August. 



28. LIBELLULA QUADRIMACULATA Linnaeus. 



The only place I have found this species is in a small pond east of 

 Emerald station, not more than two dozen having been seen. 



29. LIBELLULA PULCHELLA Drury. 



Tliis species was found occasionally aliout the sloughs in Parker 

 Bottom near Donald. 



30. PLATHEMIS LYDIA (Drury). 



This was found occasionally about all the ponds from June to 

 August. 



31. ERYTHEMIS SIMPLICICOLLIS (Say). 



This was found about all ponds from June to August. 



> Kennedy, Clarence Hamilton. Notes on the Odonata, or Dragonflies, of Bumping Lake, Washington. 

 Proo. U. 8. Nat. Mus., vol. 46, No. 2017, pp. 111-120, September 30, 1913. 



