92 Proceedings of the Biological Society of Washington. 



M. c. caendescens, twelve: — Eastern Mexico: Jalapa (Vera Cruz), 

 4; Orizaba (Vera Cruz), 3; Texolo (Vera Cruz), 4; "Mexico, " 1. 



We find that the palest birds are from Chihuahua (Cf . Ridgway, Birds of 

 North and Middle America, Pt. 4, 1907, p. 211). A specimen from 

 Escuinapa is intermediate. One bird in three from Texolo also approaches 

 the western bird in coloration. This specimen probably represents an 

 extreme variant of the eastern form, but is not nearly so pale as an extreme 

 example of the northwestern form. 



Females of both forms are duller than males, and immature birds are 

 much duller and more brownish. 



Tangara viridissima toddi, subsp. nov. 



Type. — M. C. Z., 106,342, adult cT ; Colombia: San Francisco, Santa 

 Marta Mountains, 7 February, 1899; W. W. Brown, Jr. 



Subspecific characters. — Similar to Tangara viridissima viridissima 

 (Lafresnaye)i of Trinidad, but, in fully adult plumage, head paler chestnut 

 and underparts shining Scheele's Green of Ridgway, without any marked 

 bluish tint. 



Measurements. — Type, adult cT : wing, 73.5; tail, 49.0; tarsus, 16.5; 

 exposed culmen, 10.0. 



Specimens examined. — 



T. V. toddi, forty: — Colombia: Santa Marta Mountains. 

 T. V. viridissima, eight: — Trinidad, 6: Venezuela: Yacua, 2. 



Mr. W. E. Clyde Todd, who has examined a large series of this species in 

 connection with the preparation of his forthcoming paper on the birds of 

 the Santa Marta region, informs us that birds from some parts of Venezuela 

 are apparently intermediate. 



We take great pleasure in naming this excellent form in honor of Mr. 

 Todd, in recognition of his work on the birds of this region. 



iTangara viridissima (Lafr.) replaces Tangara desmaresti (Gray), preoccupied. Cf. 

 Hellmayr, Verb. Orn. GeseUsch., Bayern, XIV, Heft 4, 1920, p. 283. 



