NO. 2192. DRAGONFLIE^, CALIFOR^UA AND NEVADA— KENNEDY. 609 



18. LIBELLULA PULCHELLA Drury. 



Several were taken about a pool on the river bank in the bottom 

 of the gorge. 



19. LIBELLULA SATURATA Uhler. 



Occasional in the gorge with the preceding. 



20. PLATHEMIS LYDIA (Drury). 



Several were seen on a spring stream in the gorge. 



21. SYMPETRUM ILLOTUM (Hagen). 



Abundant on the ' ' town drain." Usually the female of this species 

 oviposits unaccompanied by the male but here I observed a pair 

 working together. These copulated on the wmg, then rested half 

 a minute in copulation on a branch, when they flew about over the 

 water, the male holding the female by the thorax, the pair making 

 tentative dives from an elevation of about 2 feet. After a half 

 minute they dropped 2 inches above the water when with a swinging 

 motion the female dipped her abdomen in the water about 30 times, 

 after which they made a sudden upward flight and separated, each 

 to seat itself on a twig. 



22. SYMPETRUM SEMICINCTUM (Say). 



Common on the "tosvn drain." 



BEAR VALLEY, EMIGRANT GAP, PLACER COUNTY, CALIFORNIA. 



On July 21 I collected in Bear Valley, which has an elevation of 

 4,500 feet, and lies about 1,000 feet below the railroad station of 

 Emigrant Gap. This small valley is a hay meadow with a level 

 floor about 1 mile long and a fourth mile broad. Bear Creek flows 

 through it and where tributary streamlets cross it there is boggy 

 ground. Such places contain willow thickets. The sides of the 

 valley, where not occupied by granite outcrops, are covered by a 

 sparse growth of cedar and fir interspersed with thickets of various 

 shrubs. 



1. LESTES CONGENER Hagen. 



Common . 



2. LESTES DISJUNCTUS Selye. 



Occasional. 



3. ENALLA<3MA CARUNl UJ-ATUM Morse. 



Not common. 



4. ENALLAGMA CALVERTl Morse. 



Two collected. 



5.COENAGRION RESOLUTUM (Hagen). 



Several taken about a spring-fed pool, 



6. AMPHUGRION SAUCIUM ABBREVIATUM Selys. 



Not comnion. 



65(X>S°—Proc.N.M. vol.52— 17 39 



