APPENDIX. 



519 



bird, composed of sticks, weeds, dry grasses, and lined with hair, wool, and the inner 

 soft fibres of bark of the cottonwood. The usual complement of eggs is three, 

 seldom four. They measure from 1.00 by .75 to 1.10 by .80 of an inch, are of a 

 creamy-white color, with large isolated spots of a reddish-brown, scattered princi- 

 pally about the larger end. 



Myiarchus (11, 329). For a discussion of the races of M. laivrencii considered 

 in their relation to climatic color-variation, see Am. Journ. Science and Arts, 

 December, 1872. 



Sayornis (II, 339). The outlines of species of Sayornis given below are addi- 

 tional to those already published. 



Empidonax brunneus (II, 363). Specimens in the collection of the Boston 

 Society bear tlie MSS. name of E. olivus. But we cannot find a reference to this 

 name. 



Empidonax minimus (II, 372). Has been collected in El Paso County, 

 Colorado, by Mr. Aiken. 



Sayornis sayus. 



Sayornis fuscus. 



