604 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



lowing are live color notes: Eyes bluish gray, paler below; front 

 of thorax dark pruinose blue-slate; sides of thorax and sides of 

 segments 2 and 3 whitish. 



17. LIBELLULA FORENSIS Hagen. 



Several seen. 



18. LIBELLULA NODISTICTA Hagen. 



This was the most abmidant species of this genus. Individuals 

 were common on the side of Table Mountain, a half mile from water, 

 where they spent most of their time seated on the dead branches of 

 bushes scattered through the stimted Blue Oaks and Digger Pmes. 

 These were indolent and easUy captured, but individuals flying about 

 the waste-water stream were more wary. 



19. LIBELLULA PULCHELLA Drury. 



Several seen. Two captured. 



20. LIBELLULA SATURATA Uhler, 



Several were seen. Here I had an excellent opportunity to com- 

 pare the habits of these species of Libellula. L. saturata was the 

 most active and restless, nodisticta was most indolent, while pulchella 

 and forensis had habits very sunilar. 



21. PLATHEMIS LYDLA (Drury). 



Several were observed. 



22. ERYTHEMIS SIMPLICICOLLIS (Say). 



Common. 



23. SYMPETRUM CORRUPTUM (Hagen). 



Common. 



24. SYMPETRUM ILLOTUM (Hagen). 



Common. With the last three species this is fomid close over the 

 water as is also the next species. 



25. PACHYDIPLAX LONGIPENNIS (Burmeister). 



Several were taken at one spot on the waste stream back of the 

 Odd Fellows' Home. 



26. TRAMEA LACERATA Hagen. 



A smgle male, the only individual seen, was captured on the side 

 of Table Mountain. 



CHICO RIVER, CHICO, BUTTE COUNTY, CALIFORNIA. 



On June 14 and 15 I collected on the Chico River between the 

 city of Chico and the mouth of the canyon 5 mUes east of the city. 

 The river was shallow because of much irrigatmg water withdrawn. 

 It was very warm for the season, evidently carrying no snow water, 

 The bottom was gravelly and the banks heavily shaded by brush 

 and trees. 



1. HETAERINA AMERICANA (Fabricius). 



Very abundant. 



2. LESTES CONGENER Hagen. 



Common at the mouth of the canyon. 



