MUSEUM OF COMPARATIVE ZOOLOGY. 140 



19. Hirundo thalassina. Common at the Garden of the Gods, and 

 about Castle Rock, at Lake Pass, breeding in holes in the rocks, instead of in 

 hollow trees, as is its usual custom. 



20. Cotyle serripennis. A few seen along the South Platte at Denver. 



VIREONIDJE. 



21. Vireo gilvus, var. Swainsoni. One was shot on Kettle Creek, 

 near its junction with the Monument, where also others were seen. Paler 

 than eastern specimens, and pertaining to V. Swainsoni Baird, which may 

 be recognized as the western paler race of V. gilvus. 



22. Viero solitarius, var. plurnbeus. Two shot at the same locality 

 as the last, the only point where they were met with. Paler than eastern 

 specimens, with barely a trace of olive above and on the sides, but appears 

 to be merely the pale western race of V. solitarius. Other specimens are 

 in the Museum of Comparative Zoology from Colorado. 



LANIIDJE. 



23. Collurio ludovicianus. Rather common in the vicinity of Denver. 



TANAGRIDjE. 



24. Pyranga ludoviciana. A single specimen was shot near Colorado 



City, the only one seen. 



ALAUDID^l. 



25. Eremophila alpestris. Common. 



FRINGILLIDJE. 



26. Chrysomitris tristis. Common at Denver and Colorado City, and 

 seen at intervals between these points. 



27. Chrysomitris pinus. Common at the Soda Springs, near Colorado 

 City, in August, and also observed near Denver. Probably breeds in the 

 mountains, which are here but a few miles distant. 



28. Chondestes grammaca. Common. Occasionally seen in con- 

 siderable Hocks in company with Calamospiza bicolor. 



29. Fooecetes gramineus. Common. 



30. Spizella socialis. Common. Seen in large flocks the first week 

 in August. 



31. Spizella pallida. More or less frequent, associating with S. socialis, 

 from which, in nestling plumage, it is scarcely distinguishable. 



32. Melospiza melodia. A few observed near Colorado City. 



33. Calamospiza bicolor. Abundant. Moulting the first week in 

 August, wben the males were curiously mottled with irregular patches 

 of brown and black. 



34. Euspiza americana. Frequent near Colorado City. 



35. Goniaphea melanocephala. Observed at Colorado City and at 

 Denver. 



