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NORTH AMERICAN FAUNA. 



La Paz, Lower Oaliforuia, but which proved to be made up of species 

 fouud neaa- Mazatlan, Siualoa. 



Thalurania luciae Lawr. 



Thalurania lucice Ligb\yi-., Ann. Lyc. Nat. Hist., N. Y., VII, p. 2, 1867 ; Proc. Boston 

 Soc. Nat. Hist., XIV, p. 284, 1871 ; Mem. Boston Soc. Nat. Hist., II, p. 291, 1874. 



Described as new from the specimen sent in by Xantus, but proved 

 to be Thalurania glaucopis^ a resident of southeastern Brazil. 



Florisuga mellivora (Linn.). 



Lawr., Proc. Boston Soc. Nat. Hist., XIV, p. 284, 1871; Mem. Boston Soc. Nat. 

 Hist., II, p. 291, 1874. 



A well-known species of the humid tropics from southern Mexico to 

 South America. There is no authentic record for it in western Mexico, 

 and it is safe to say it has not been taken on the Tres Marias. 



Uranomitra guatemalensis (Gould). 



Lawr., Proc. Boston Soc. Nat. Hist., XIV, p. 284, 1871; Mem. Boston Soc. Nat. 

 Hist., II, p. 292, 1874. 



A species which ranges from Guatemala and British Honduras 

 southward. There is no authentic Mexican record. 



Petasopiiora thalassina (Swainson). 



Lawr., Proc. Boston Soc. Nat. Hist., XIV, p. 284, 1871; Mem. Boston Soc. Nat. 

 Hist., II, p. 292, 1874. 



This humming bird ranges from the highlands about the Valley of 

 Mexico southward into Central America, but there appears to be no 

 authentic record for western Mexico. 



Chlorostilbon insularis Lawr. 



Chlorostilbon insularis Lawr., Ann. Lyc. Nat. Hist. N. Y., VII, p. 457, 1867; Proc. 

 Boston Soc. Nat. Hist., XIV, p. 284, 1871; Mem. Boston Soc. Nat. Hist., 

 II, p. 292, 1874. 



This bird was described by Mr. Lawrence from a Xantus specimen, 

 but proved to be Chlorostilbon pucherani of southeastern Brazil. 



Merula grayi Lawr. 



Merula grayi Lawr., Proc. Boston Soc. Nat. Hist., XIV, j). 276, 1871; Mem. Bos- 

 ton Soc. Nat. Hist., II, p. 266, 1874. 



Grayson's notes on Merula grayi on the Tres Marias refer to pale 

 specimens of M. graysoni, and his record of 31. grayi at the city of 

 TepiCj on the adjacent mainland, refers to M. tristis. Merula tristis is 

 a common and widely spread species in suitable localities in western 

 Mexico and is the only Merula sent in by Grayson from the city of 

 Tepic. 



Merula grayi^ on the contrary, does not appear to occur anywhere in 

 western Mexico north of the Isthmus of Tehuantepec, for no specimens 

 were taken by Grayson nor, during our own work at many localities 

 between the Isthmus and Mazatlan, has a single individual been noted, 

 and there appears to be no authentic record of its occurrence there. 

 This thrush is a species of the humid tropics, ranging along both coasts 

 of Central America north to the Isthmus of Tehuantepec, and thence 

 northward its range is limited to the humid region of the Gulf coast 

 and adjacent mountain slopes of eastern Mexico. 



