BIRDS. 35 



83. NETTION OAKOLINENSIS, Baird, (p. 777.)— Green- winged Teal. 



9722. d", ?• Rio Rita, Laguna, New Mexico, November 12, 1854. (3.)— 9723. ?. 

 Ditto. Kennerly and Mollhausen. 



This duck was probably more abundant than any species that we met with. Besides finding 

 great numbers along the Eio Grande, we scarcely ever failed to see it during our westward 

 journey, wherever we found running water. 



84. QUERQUEDULA CYANOPTERA, Baird, (p. 780.)— Red-breasted Teal. 



9750. Mohave river, March 11, 1854.-9740. <? . Camp 123, February 16, 1854. (166.) 

 Kennerly & Mollhausen. 



We saw this bird frequently on Bill Williams' Fork, Grreat Colorado and Mohave rivers. 

 The male, when in full plumage, is one of the most beautiful of all the ducks ; but they seemed 

 to be remarkably scarce in comparison with the number of females. 



85. CHAULELASMUS STREPERUS, Gray, (p. 782.)— Gadwall. 

 9796. ^ . San Francisco, California, March, 1854. 



86. AIX SPONSA, Boie, (p. 785.)— Summer Duck. 



9776. San Francisco, California, $ , February, 1854. Kennerly and Mollhausen. 



This beautiful duck we did not see before reaching San Francisco, in the vicinity of which 

 place we found it very abundant. 



87. FULIX AFFINIS, Baird, (p. 792.)— Little Black Head. 



We found this duck very common in the vicinity of San Francisco, but did not observe it 

 before reaching that place. 



88. BUCEPHALA ALBEOLA, Baird, (p. 797.)— Butter Ball. 



9813. Bill Williams' Fork, New Mexico, February, 1854. (89.) 



This expert little diver we saw occasionally in small flocks, in the month of February, along 

 Bill Williams' Fork and the Great Colorado river. 



