NO.2107. DRAOOyPLIEH, WASHINGTON AND OREGON— KENNEDY. 331 



LIBEUTY LAKK, WASHINGTON. 



On July 4, 1912, 1 collected at Liberty Lake in the Mica Mountains, 

 east of the city of Spokane, Washington. 



The Mica Mountains rise about 1,000 feet above Spokane Valley 

 and are covered with pine timber. The foothills and the Spokane 

 Valley floor lie in the sage brush. Liberty Lake is a narrow body of 

 water 2 miles long and three-fourths of a mile wide lying in the outer 

 end of a deep V-shaped ravine running back into the mountams. The 

 upper end of the lake is in the timber, the lower end in the sage brush. 

 The shores of the lake are steep, except at outlet, where the water 

 flows sluggishly through low weedy banks, and the upper end, where 

 there is a triangular marsh of about 20 acres in extent. The follomng 

 species were taken: 



1. ENALLAGMA CARUNCULATUM Morse. 



Several taken in outlet. 



2. ENALLAGMA CYATmGERUM (Chan»entier). 



Found in outlet. 



3. ENALLAGMA EBRIUM (Hagen). 



This was very abimdant in the Scirpus fringing the lake shore along 

 the swamp at its upper end. 



4. AMPmAGRION SAUCIUM (Burraeister). 



A few were taken about tlie outlet. 



5. ISCHNURA CERVULA Selys. 



Several seen in the outlet. 



6. ISCHNURA PERPARVA Selys. 



Common in the outlet. 



7. AESHNA UMBROSA OCCIDENT ALIS Walker. 



Four male nymphs and one female nymph of this species were found 

 in the outlet. These were very kindly identified by Doctor Walker. 

 Several Aeshnas were seen on the wing but no adults were taken. 



8. TETRAGONEURIA SPINIGERA Selys. 



Several were captured in the swamp at the head of the lake. 



9. LIBELLULA QUADRIMACULATA Linnaeus. 



Several were seen in the swamp at the head of the lake. 



10. LIBELLULA FORENSIS Hagen. 



This species was common in the outlet. 



11. SYMPETRUM CORRUPTUM (Hagen). 



Two specimens were captured in the outlet. 



12. SYMPETRUM OBTRUSUM (Hagen), var. DECISUM (Hagen). 



Emerging in large numbers in the swamp. 



13. SYMPETRUM PALLIPES (Hagen). 



Emerging from the swamp in numbers. 



