142 EGGS OF NORTH AMERICAN BIRDS. 



712. Crissal Thrasher, Harporhynclnis crissalis. Eggs, 

 3 or 4, oval, bluish green, unspotted; .75 -}- 1.08 to .76 -|- 

 1.14. The unspotted egg is remarkable in a member of this 

 group. Nests similar to those of other Thrashers that breed in 

 the same region. Breeds in Southwestern United States, from 

 New Mexico to Utah and Southern California, in May. 



713. Cactus Wrek, Campylorhynchus h'uwieicapillus. 

 Eggs, 4 to 6, oval, white, but so covered with salmon-colored 

 dots as to nearly conceal the ground color; .65 -|- 1-00 to .68 

 -f- 1.02. The general salmon-colored effect is characteristic. 

 Nests composed of grass neatly woven into a purse-shaped 

 poucb, and placed flat on the stems of cacti. Breeds in the 

 southern border of the United States, from Texas to Southern 

 California, and south into Northern Mexico, in May. 



714. Saint Lucas Cactus Wren, Campylorhynchics affinis. 

 Eggs and nests, indistinguishable from those of No. 713. 

 There is a coarse ty})e of markings that is, perhaps, oftener 

 assumed by these than by those of No. 713. Breeds in Lower 

 California. 



715. Rock Wren, Salpinctes obsoCetns. Eggs, 6 to 7, oval, 

 white, sparingly spotted, chiefly on the larger end, with brown- 

 ish red ; .60 -\- .lb to .66 -\- .77. The general light color is 

 one chief characteristic. Nests placed in holes of rocks or in 

 buildings, composed of grass, feathers, etc. Breeds in West- 

 ern United States, from the western border of the plains to 

 the Pacific. 



716. Guadalupe Rock Wren, /Salpinctes guadeloupe?isis. 

 Eggs, probably indistinguishable from those of No. 715. 

 Breeds on Guadalupe Island, Lower California. 



717. White-throated Wren, Cathet'pes inexicanus. Eggs, 

 probably similar to those of No. 717a. Extralimital ; breeds 

 in Mexico ; bird accidental in Texas. 



717*^?. Canon Wren, Catherpes mexicanus conspersus. 

 Eggs, 5 or 6, oval, white, sparingly spotted, dotted, and 

 blotched with pale reddish brown, the markings being more 



