8 UNITED STATES AND MEXICAN BOUNDARY. 



always eeem to have interest in the same nest, over which they are very watcliful and give proof of courage when interfered 

 with, by darting at the intruder. Their note short and sharp, without much variation, can be heard at a good distance. The 

 Mexicans imagine that they live upon the brains of other birds. — (Clark.) 



This bird is rather shy, but of very lively disposition — sometimes three or four are seen in company, evidently preferring the 



thinly wooded prairies to close thickets* 



In beauty it is considered the queen of all birds found in Northern Tamaulipas. This superiority is not owing to the brilliancy 

 of plumage, for in that it is excelled by several species, but to the inimitable grace and charm of its flight — rising from the 

 topmost branch of some Acacia, it seems to float rather than fly — then descending perpendicularly it retakes its position uttering 

 its usual note. Not seen west of Cadereita. — (Couch.) • 



47. TYRANNUS VOCIFERANS, Swains, (p. lU.)— Cassin's Fly-catclier. 



Plate X. 



4579. Colorado river, Cal. A. Schott. — 7204, Los Nogales, Mex., Jan., 1855. Dr. Kennerly 



48. TYRANNUS COUCHII, Baird, (p. 175.)— Couch's Fly-catcher. 



Plate XI, Fig. 1. 



4001 S New Leon, Mex. Lieut. Couch.— 4002. San Diego, Mex. March, 1853.— 4003 ^ 

 Lieut. Couch. April, 1853. San Diego, Mex. ' 



The tail of T. melancholicus ^ is represented on plate XI, fig. 2, for comparison. 



h 



Very common and noisy; found among the large trees of gardens and luxuriant river bottoms. — (Couch.) 



49. MYIARCHUS MEXICANUS, B a i r d , (p. 179.)— Ash-throated Fly-catcher. 



T212 9 , Saltillo, Coahuila 



4608. Colorado hottom, Cal., March 31, 1854. A. Schott, 38.-4588. Gila river, N. M 

 31, 1854. A. Schott, 38.— 7208, Los Nogales, Mex., June, 1853, Dr. Kennerly.— 7211 i 

 tera, Tex. J. H. Clark, 32.— 7213. Eagle Pass, Tex. A. Schott, 

 Mex., May, 1853. Lieut. Couch, 221. 



Observed most abundantly in damp places, or near the water. — (Clark.) 

 Found among tlie mesquite bushes. — (Couch.) 



Very common in the vicinity of Lcs Nogules. When two are together they make continually a loud chattering noise.— 

 (Kennerly.) 



^ Cadereita, Mex 



50. MYIARCHUS LAWEBNCII, Baird, (p. 181.)— Lawrence's Fly-catcher 



Plate IX. — Fig. 3. — Female. 

 10028 9 . San Diego, New Leon. Spring, 1853. Lt. Couch, 110. 



Has a pleasant note. — (Couch.) 



r 



51, SAYOBNIS NIGKICANS, Bo nap. (p. 183.)— Black Fly-catclier. 



7214 9 , Espia, Mex. 1855. Dr. Kennerly, 54. 

 Lt. Couct — 4005, $ do. 



Found at Cadereita under the high banks ^f the stream which supplies tlie town with water ; its habits are much the same 

 as those of the Phcebe bird (Sayornis fuscus.) Its nest was probably in the bank.— (Couch.) 



The habits of tliis bird were not observed to differ from those of the Pyrocephalus ruhineus. They were observed in the same 

 vicinity, feeding alike on insects and having the same motions. — (Kennerly.) 



52. SAYORNIS FUSCUS, Baird, (p. 184.)— Pewee. 



4009. BrownsvHle, Tex. February, 1853. Lt. Couch, 22.— 4008 9 , Tamaulipas, Mex. 

 March. Lt. Couch. 92. 



