NO. 2192. DRAQ0NFLIE8, CATAFORNIA AND NEVADA— KENNEDY. 601 



9. LIBELLULA SATURATA Uhler. 



Common. Many females of this species were found dead in the hot 

 stream flowing from the largest spring. Perhaps they had tried to 

 oviposit here, as the other streams were badly overgrown with vege- 

 tation. 



10. PLATHEMIS LYDIA (Drury). 



Common. 



11. ERYTHEMIS SIMPLICICOLLIS (Say). 



Abundant. 



12. SYMPETRUM CORRUPTUM (Hagen). 



Occasional. 



13. SYMPETRUM ILLOTUM (Hagen). 



Common. 



COLUSA, COLUSA COUNTY, CALFPORNIA. 



From the Napa Valley I traveled up the Sacramento to Colusa, 

 where I collected on eJune 11. This town is on the banks of the 

 Sacramento, which is a navigable stream at this point. The bot- 

 toms here are many miles wide and being lower than the flood stage 

 of the river, are traversed in various directions by dykes. These 

 break up the natural drainage so that waste irrigating water has 

 produced numerous more or less permanent sloughs. 



1. HETAERINA AMERICANA (Fabricius). 



Common among the willows fringing the river. 



2. LESTES CONGENER Hagen. 



Very abundant on the slough west of town. 



3. ARGIA EMMA Kennedy. 



Abundant on the banks of the river. The majority of the indi- 

 viduals were tenerals. 



4. ENALLAGMA CARUNCULATUM Morse. 



Common on the sloughs. 



5. ZONIAGRION EXCLAMATIONIS (Selys). 



Two males and one female on the river bank. Not abundant. 



6. ISCHNURA CERVULA Selys. 



Common on the sloughs. 



7. ISCHNURA PERPARVA Selys. 



Common on the sloughs. 



8. CELAENURA DENTICOLLIS (Burmeister). 



The most abundant species on the sloughs. 



9. OPHIOGOMPHUS OCCIDENTIS CALIFORNICUS Kennedy. 



Two males of this pale variety of occidentis were taken on the 

 sandy bank of the river opposite the town. Exuviae were very 

 abundant among the willows along the river (see p. 547). 



10. AESHNA MULTICOLOR Hagen. 



Common about the sloughs. 



11. LIBELLULA FORENSIS Hagen. 



Common on the sloughs. 



