^^ ZOOLOGY. 



23. SAYORNIS SAYUS, B a i r d , (p. 185.)— Say's Fly-catcher. 



7228. Bill Williams' Fork, New Mexico, February 10, 1854.— T233. Do. February 16, 

 1854. (88, lYO.) K. & M. 



We found this bird common in Texas and as far to the westward as the Great Colorado river. 

 It built its nest under the cliffs along the stream, and in its notes, and in every other respect, 

 closely resembles the common pewee, (Tyrannula fusca.) 



24. SIALIA MEXIOANA, S w a i n s o n , (p. 223.)— Western Blue Bird. 



763Y. Camp 110, New Mexico, January 31, 1854. (60.) K. & M.— Y635. Fort Conrad, 

 New Mexico, October, 1853. (52.) Dr. Kennerly. 



We found this beautiful bird very abundant during our march up the Eio Grande, and from 

 thence to the Great Colorado. At the time of which we write, from November to the latter 

 part of January, they were always seen in large flocks, near the different streams that we 

 passed. 



25. SIALIA ARCTICA, Swainson, (p. 224.)— Rocky Mountain Blue Bird. 

 7607. 75 miles west of Albuquerque, November 1853. (15.) K. & M. 



26. EEGULUS CALENDULA, L i c h t . (p. 226.)— Ruby-crowned Wren. 



7177. Camp 105, January 24, 1854. (55.)— 7167. Camp 116, New Mexico, February 8, 

 1854. (75.) K. & M. 



We found these beautiful! itlle kinglets in the Aztec mountains, in the month of January, 

 and along Bill Williams' Fork in the month of February. They were found in the thickest 

 bushes, and seemed always to be busily engaged in searching for their insect food and chirping 

 as they hopped about. 



27. DENDROICA AUDUBONII, Baird, (p. 273.)— Audubon's Warbler. 

 7663. Cocomongo Ranch, California, March 19, 1854. (190.) 



This beautiful little bird was found by Dr. Woodhouse in the mountainous districts of New 

 Mexico but it did not attract our attention until we reached the border settlements of Cali- 

 fornia. In the vicinity of the Cocomongo Rancho we found it very abundant among the low 

 bushes in the month of March. The song of this bird somewhat resembles that of the summer 

 yellow bird, (Dendroica aestiva.) 



28. COTYLE SERRIPENNIS, Bonap. (p. 313.)— Rough-winged Swallow. 



6031. Camp 124, New Mexico, February 21, 1854. (176.) K. & M. 



We found this swallow very abundant along the Great Colorado river in the month of February. 

 In its flight it resembles the common barn swallow {Hirundo rufa.) We did not have an 

 opportunity of noticing anything in connexion with its nidification, as the season, I presume, 

 had not yet arrived for nest building. 



