3G2 Mr. O. Salvin on the Birds of the 



We have lately written at some length upon this bird, 

 which is the same as that found in the Rio Grande valley, 

 the State of Vera Cruz, Yucatan, &c. It has often been 

 called M. cooperi and M. mexicanus, but neither of these 

 names can, in our opinion, be used for it. We have therefore 

 employed Mr. Kidgway^s title, M. magister, for it, which is, 

 however, more strictly applicable to a larger form found in 

 Arizona and North-western Mexico. 



-f-100. Myiarchus yucatanensis. 



Mi/larchus yucatanensis, Lawr. ; Scl. Cat. B. Brit. Mus. xiv. 

 p. 260 ; Salv. & Godm. Biol. Centr.-Am., Aves, ii. p. 93. 



Cozumel I. 



Two specimens, having the upper surface, especially the 

 head, slightly darker than a third from Northern Yucatan, 

 which has been compared and found identical with the type 

 of M. yucatanetisis. 



The species is a fairly definite one, but is very like M. law- 

 rencii of Eastern and North-eastern Mexico. 



-^101. Myiarchus lawrencii. 



Myiarchus lawr'encii (Giraud) ; Scl. Cat. B. Brit. Mus. xiv. 

 p. 256; Salv. & Godm. Biol. Centr.-Am., Aves, ii. p. 94. 



Myiarchus lawrencii olivascens, Bidgw. 



Myiarchus platyrhynchus , Ridgw. Proc. U.S. Nat. Mus. 

 viii. p. 570. 



Cozumel I. ; Ruatan I. 



Many examples. A very common but variable bird in 

 Mexico and Central America, as well as on the mainland of 

 Yucatan, from which these island-birds present no tangible 

 differences ; but I notice that the throat is a trifle paler than 

 in Guatemalan examples. 



Mr. Ridgway kindly sent me his type of M. platyrhynchus 

 for examination, and I came to the conclusion that it be- 

 longed to M. lawrencii, the normal yellow colour of the 

 plumage having been removed by alcohol. 



■f 102. Tyrannus pipiri. 



Tyrannus pipiri, Vieill. ; Scl. Cat. B. Brit. Mus. xiv. p. 2G7 ; 

 Salv. & Godm. Biol. Centr.-Am., Aves, ii. p. 97. 



