DESCRIPTION OF CAMPS. 339 



(Zencedura caroUnensis), were breeding at the time of our sojourn; nor was 

 the fauna particuLarly interesting, except from the occurrence of swarms 

 of the Rufous Hummer {Selasphorus rufus) among the sun-flowers, and of 

 several pairs of the Eastern Kingbird [Tyrannus caroUnensis), which appeared 

 to have bred in the cotton-wood trees, a few individuals of Coccijzus ameri- 

 caniis and Mijlodlodes pnsiUas, and several families of Sialia mcxkana, being 

 the only otiier birds of note which came under our observation. 



G. Truckcc Reservation, near Pyramid Lake (August 10-16,1867; Decem- 

 ber 9-19, 18o7; May 15-June 6, 1868).— Investigations along the lower 

 portion of the Truckee Valley extended from the shore of Pyramid 

 Lake several miles up the river, and embraced several trips across the 

 desert mesa to the northern end of the Virginia range, fronting on the 

 southern shore of the lake, besides occasional visits to the islands within 

 the lake. The fertile valley of the river received the principal attention, 

 however, on account of the abundance of its birds; and, as respects the 

 character of the locality where our observations were mostly made, there 

 was no material difference from the surroundings of our former camp at 

 the Big-Bend, twenty-five miles above, except that the valley was consider- 

 ably broader and the cotton-wood groves proportionately more extensive. 

 During our sojourn here, from Mny 15th to June 6th, one hundred and 

 two species were observed in the valley of the river, most, if not all, of 

 them breeding in the locality. The following are the species observed: — 



1. Tardus ustulatus Om specimen. 



2. Oreoscoptes montamis Common. 



3. Troglodytes parkmauui Abundant. 



4. Telniatodytes paludicola Abundant 



5. Dendrceca ajstiva Abundant. 



C. Geothlypis trichas Common. 



7. Icteria lougicauda Common. 



8. Pyranga ludoviciaua Common. 



0. Hirundo borreorum Common. 



10. Tacliyciueta bicolor . Abundant. 



1 1. Tacbyciueta tbalassina Common. 



12. Progne .subis Eare. 



13. Stelgidopteryx serripeimis Abundant. 



14. Cotyle riparia Abundant. 



l.'i. Petrocbelidoii luuifrous Abundant. 



10. Vireosylvia swainsoui Abundant. 



