608 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



5. ARGIA VIVTOA Hagen. 



Very abundant on the spring streams trickling down the sides of 

 the gorge. 



6. ENALLAGMA CARUNCULATUM Morse. 



Common on the ''town dram," where the next also occurred. 



7. ENALLAGMA CYATfflGERUM (Charpentier). 



Occasional along the edges of the river. 



8. TELEBASIS SALVA (Hagen). 



Occasional on the "town drain." 



9. ISCHNURA CERVULA Selys. 



On "town dram." Rare. 



10. ISCHNURA PERPARVA Selys. 



Tenerals common on "town drain." 



11. CORDULEGASTER DORSALIS Hagen. 



One male was seen at close range on the river bank. It was the 

 only time I have seen this species except on or near swift momitain 

 torrents. He persisted in alightmg on various bushes and so may 

 have been lost from his usual haunts. 



12. OPHIOGOMPHUS OCCIDENTIS CALIFORNICUS Kennedy. 



Tliree females were caught on the river bank below the dam. A 

 fourth mdividual was seen. These were unusually yellow, the dark 

 pattern being very pale and restricted (see p. 543) . 



13. OCTOGOMPHUS SPECULARIS (Hagen). 



One male was seen at close range while he was seated. This was 

 on a very small spring stream, the whole flow of wliich could pass 

 through a 2-inch pipe. 



14. AESHNA MULTICOLOR Hagen. 



One male was taken. Several AesTina, probably of this species, 

 were seen. 



15. AESHNA PALMATA Hagen. 



One taken. 



16. MACROMIA MAGNITICA Mc Lachlan. 



A male, the only one seen, was taken on the river above the dam. 



17. LIBELLULA NODISTICTA Hagen. 



Common on the "town drain." In the morning the individuals 

 of this species were easily captured while seated on brush and weeds 

 in the sunny openings along the stream. Copulation was as usual 

 among Libellula. A female observed ovipositing flew about 2 feet 

 above the water and made several quick swings downward, tappmg 

 the water with her abdomen just once for each swing. This species 

 appears to have a restricted distribution in California. So far there 

 are no records except for the foothills of the Sierra; m other words, a 

 zone along the west side of the Sierras between about 500 feet alti- 

 tude and 3,000 feet. It has not been recorded from the Sacramento 

 or San Joaquin Valleys proper or from west of them, or from the 

 wooded crest of the Sierras. 



