(J2 NORTH AMERICAN FAUNA. 



La Paz, Lower Califoruia, but which proved to be made tip of species 

 fouud near Mazatlau, Siualoa. 

 Thaluraiiia luciae Lawr. 



Thaliirania /«ciffi Lawr., Auu. Lye. Nat. Hist., N. Y., VII, p. 2, 1867 ; Proc. Boston- 

 •Soc. Nat. Hi.st., 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 southeasteru Brazil. 



Florisuga mellivora (Liuu.). 



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

 Hist..II, p. 291, 1874. 



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

 South America. Tliere is no authentic record for it in wester u Mexico, 

 and it i.s safe to say it lias not been taken on the Tres Marias. 



Uranomitra guateinalensis (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 lUitish Honduras 

 southward. There is no authentic Mexican reconl. 



Petasophoia thalassina '(Swainson). 



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

 Hist., II, p. 292, 1874. 



This humming bird ranges from the highlands about the Valley of 

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

 authentic record for western Mexico. 



Chlorostilbou insularis Lawr. 



Chlorostilbun insularix Lawr., Auu. Lye. Nat. Hist. N. Y., VII, p. 457, 1867; Proc. 

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

 II, p. 292, 1874. 



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

 but proved to be GhlorosUlboii pucherani of southeasteru Brazil. 



Merula grayi Lawr. 



iJerida ijrayi Lawr., Proc. Boston Soc. Nat. Hist., XIV, )>. 276, 1871; Mem. Bos- 

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



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

 s])ecimens of M. (/raysoni, and his record of M. grayi at the city of 

 Tepic, 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 yrayi, 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 ap|)ears 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. 



