516 



APPENDIX. 



Passerella (11, 49). The capture of a specimen exactly intermediate between 

 P. iliaca and P. townsendii, at Saticoy, California, December 14, 1872, by Dr. 

 Cooper, renders it extremely probable that all the known forms of this genus are 

 but geographical races of one species. The chai-acters of this specimen (No. 63,651) 

 are as follows : Most like iliaca in reddish tints and coloration of the head, with 

 occasional nearly pure ashy lights, but with the suftused pattern of townsendii 

 Wing, 3.60; tail, 3.60; culmen, .50; tarsus, 1.00. 



Passerella megarhynchus (II. 57). Dr. Cooper found this species common 

 betw^een 5,000 and 7,000 feet elevation, on the Central Pacific Railroad line, 

 where most of the country was still covered with snow. One or two were to be 

 found in every thicket at distances of a quarter of a mile, already paired and 

 having selected their summer residence, having remained in close proximity to the 

 snow^y region all winter. In July, on a second visit to the mountains, he observed 

 them still singing occasionally, at Truckee, near 6,000 feet altitude, on the east 

 slope. 



Euspiza americana (II, 65). According to Mr. Allen this species is abun- 

 dant at Denver, Colorado, being found entirely across the Plains to the eastern 

 slope of the Rocky Mountains. 



Guiraca ceerulea (II, 77). Has been obtained in El Paso County, Colorado, 

 by Mr. Aiken. 



Cardinalis virginianus, vai-. igneus (II, 103). Has been found in El Paso 

 County, Colorado. Specimens from Eastern Kansas, collected by Mr. Allen, seem 

 also to be referrible to this form. 



Pipilo erythropthalmus (II, 109). Specimens collected by Dr. Coues at 

 Pembina, Minnesota, in June, 1873, have (both males and females) a greater or less 

 number of minute white specks more or less distinctly indicated on the portion 

 where the large white spots of the western forms are located. This points to the 

 probability that all the black races ranged in the synopsis under niaculatus (includ- 

 ing the latter itself) must be referred to erythropthahnns. 



Pipilo mesoleucus (II, 125). Captain Bendire found this species breeding 

 in Southern Arizona, in the neighborhood of Tucson. One nest was found August 

 2, another September 4, 1872. Both were built in mesquite-trees, and were six 

 feet from the ground, — an unusual position in birds of this family. The eggs are 

 also peculiar, and differ from any of this genus I have ever met with, having more 

 resemblance to eggs of Sturnellce, especially to the militaris of South America. The 

 eggs from one nest are one inch in length by .73 in breadth, have a bright white 

 ground, with a slight tinge of bluish, and are boldly plashed, especially around the 

 larger end, with distinct deep dashes of reddish and piirplish brown. A few of 

 these blotches are scattered irregularly over the entire egg, but the greater portion 

 are grouped around the more obtuse end. The eggs are of oval shape, both ends 

 rounded, one slightly less than the other. The eggs in another nest are more 

 nearly spherical, with less difference in the ends ; the ground-color is more dis- 

 tinctly white ; the spots, of reddish-brown, are finer and more concentrated about 

 the larger end ; and the faint markings of purplish are much more numerous. 

 These measure .74 by .90 of an inch. , 



