181 



No. 



Species. 



*42. Progne subis (L.). 



^43. Petrochelidon lunifrons (SAY). 



Centre of abundance during breeding season. 



Pine region and adjoining 

 aspen woods ; occa- 

 sionally lower. 



Cliffs, everj'where below 

 the Alpine region. 



Caves everywhere. 

 With P. subis. 



*44. Hirundo horreorum BARTR. 

 *45. Tachycineta bicolor (VIEILL.). 



*46. Tachycineta thalassina (S WAINS.). In cliffs with Panyptila 



melanoleuca f occasion- 

 ally in holes with T. 

 bicolor and P. subis? 



*47. Cotyle riparia (L.). Earth banks, valley por- 



tions. 



*48. Stelgidopteryxserripennis(AuD.)- With C. riparia. 



*49. Vireosylvia gilva, All deciduous woods. 



var. SWAINSONI Baird. 



*50. Lanivireo solitaria (WILS.), 

 va't . PLUMBEA Coues. 



51. Ampelis garrulis L. 



52. Ampelis cedrorum VIEILL. 



*53. Myiadestes Townsendii (AUD.). 



54. Collurio borealis (VIEILL.). 



*55. Collurio Ludoviciamis (L.), 

 var. EXCUBITOROIDES Swains. 



*56. Pyranga Ludoviciana (WILS.). 



57. Hesperiphona vespertina, 



var. MONTANA Riclgw. 



58. Pinicola enucleator (L.), 



*60. 



G1. 



var. ''CANADENSis Briss." 

 Carpodacus Cassinii BAIRD. 



Carpodacus frontalis (SAY). 

 Chrysomitris pinus ( WILS.). 



*G2. Chrysomitris tristis (L.). 

 *63. Chrysomitris psaltria (SAY). 



04. Loxia curvirostra L., 

 var. MEXICANA Strickl. 



ESSEX INST. BULLETIN. v 



Foot-hills with Helmin- 

 thophaga Virginia. 



Cedars of foot-hills and 

 rocky gorges. 



Open places at nearly all 

 altitudes. 



All wooded places, but 

 chiefly lower part of 

 pine region. 



Cottonwoods at lower 

 edge of pine region. 



Valley portions and foot- 

 hills. 



Pine region and adjoin- 

 ing aspen woods.. 



Valley portions. 

 Foot-hills? 



16' 



