NO. 2192. DRAOONFLIES. CAL/J'ORXfA AND NET A DA -KENNEDY. G17 



5. AMPHIAGRION SAUCIUM ABBREVIATUM Selys. 



Only one was seen. 



6. ISCHNURA CERVULA Selys. 



Common in restricted areas, 



7. ISCHNURA PERPARVA Selys. 



Occasional. 



8. OPHIOGOMPHUS MORRISONI Selys. 



Four exuviae were found on a gravel bar of the river. This is a 

 species of elevated districts. I have it from the Deschutes River, 

 at Bend, Oregon, elevation 4,000 feet; from Donner Lake, CaMfornia, 

 elevation 5,940 feet; and from Lake Tahoe, Cahfornia, elevation 

 6,225 feet. Farther east on the Truckee River than Reno Valley 

 it is displaced by OpJiiogomphus morrisoni nevadensis Kennedy, 

 Morrisoni is apparently a species of the upper border of the Tran- 

 sition Zone. Ophiogomplms momsoni and Argia emma were the 

 only species found on the river in the Reno Valley. 



9. AESHNA PALMATA Hagen. 



AesJina was very abundant over the areas of tules or cattails in 

 the sloughs. All of those captured were of this species. Probably 

 constricta Say and interna Walker occur in this valley also. 



10. LIBELLULA FORENSIS Hagen. 



Very common. This was the only LibeUula seen. 



11. SYMPETRLM CORRUPTIJM (Hagen). 



Common. 



12. SYMPETRUM COSTIFERUM (Hagen). 



One captured. Several seen. 



13. SYMPETRUM RUBICUNDULUM DECasUM (Hagen). 



Common. The white faced ohtrusum was not observed. 



14. SYMPETRUM PALLIPES (Hagen). 



Several observed. 



15. SYMPETRUM SCOTICUM (Donovan). 



The most abundant species. 



16. LEUCORRHINIA GLACIALIS Hagen. 



The type of this species came from Reno, but I saw none. How- 

 ever, I collected over only a small portion of the valley. 



LOWER TRUCKEE RIVER, NEVADA. 



In the few miles before the Truckee River empties into Pyramid 

 Lake it meanders as a strongly alkahne stream over numerous gravel 

 bars tlirough the rich bottom land occupied by the Piute Indians. 

 The Truckee tln-ough its lower course is well shaded by cottonwoods, 

 willows, and alders. My collecting at this point and on Pyi-amid 

 Lake, 4 miles distant, was made possible through the kindness of 

 Mr. Oliver, the Indian agent, at whose home I stayed while there. 



1. LESTES CONGENER Hagen. 



Common in the willows, n 



