626 PROCEEDINai^ OF THE NATIONAL MUSEUM. vol.52. 



7. MACROMIA MAGNIFICA Mc Lachlan. 



One female was caught on the dyke along Calaveras Greek. She 

 was old, with frayed wings. 



8. UBELLULA PULCHELLA Drury. 



Not common. 



9. LIBELLULA SATURATA llhler. 



Not common. 



10. PLATHEMIS LYDIA (Drury). 



One male caught. 



11. ERYTHEMJS SIMPLICICOLLIS (Say). 



Saw one female. Not common. 



12. SYMPETRUM CORRUFTUM (Hagen). 



Common on the sloughs. 



13. SYMPETRUM ILLOTUM (Hagen). 



Scarce. 



14. SYMPETRUM SEMICINCTUM (Say). 



Scarce. 



FRESNO, FRESNO COUNTY, CALIFORNIA. 



Fresno, surroimded by its vineyards, lies near the great bend of 

 the San Joaquin. East of Fresno the river comes down from the 

 Sierras a swift, snow-fed mountain stream, but turning abruptly it 

 flows away to San Francisco Bay in the north. In this lower, level 

 portion of its course through the hot, dry San Joaquin Valley it is 

 almost the opposite of a mountain stream. It meanders sluggishly 

 over a bed of shifting white sand. Its waters become turbid and 

 warm. 



Collecting at Fresno was done at Fresno Beach, a city recreation 

 park on the banks of the river, and at Friant, a few miles from Fresno, 

 where the San Joaquin emerges from its Sierra canyon. 



FRIANT, FRESNO COUNTY, CALIFORNIA. 



The following list was taken September 4, 1914, at Friant, which is 

 a village on the San Joaquin where the latter emerges from the great 

 canyon through which it descends from the high Sierra. Here for a 

 few miles before it reaches the level valley floor it is a swift stream 

 300 feet wide, from 1 to 5 feet deep, flowing over a bed of gravel. 



1. ARGIA EMMA Kennedy. 



Several seen. 



2. ERPETOGOMPHUS COMPOSITUS Hagen. 



This was very abundant and wiU be discussed fully in my next 

 paper. 



3. ANAX JUNIUS (Drury). 



One or two observed. 



4. AESHNA MULTICOLOR Hagen. 



Several Aeshna, probably this, were observed. 



