698 GEOLOGICAL SURVEY OF THE TERRITORIES. 



(Sub-family Milvince, the Kites.) 

 Circles Jmdsonius, Vieillot, (marsli-hawk :) 



No. 



Catalogue- 

 number. 



Sex. 



Date. 



Measure- 

 ments. 



Locality. 



222 



62233 



Juv. 



Aug. 9, 1872 



211 X 50 



Henry's Lake, Idaho. 



Hob. — All of North America and Cuba. 



Marsb-bawks were quite abuiidant in tbe Salt Lake Basin, tbence 

 nortbward to Henry's Lake, and down Snake Eiver. 



(Sub-family Aquiliiiw, the Eagles.) 



Pandion carolinensis, Bon., (fisb-bawk :) 



No. 



Catalogue- 

 number. 



Sex. 



Date. 



Measure- 

 ments. 



Locality. 



220 



62232 



JUY. 



Aug. 7, 1872 



23 X 62i 



North Fork, Idaho. 



Sal). — Tbrougliout temperate Nortb America. * 



Fisb-bawks were only met witb on tbe Nortb Fork of Snake Eiver j 

 here I sbot one specimen as it was soaring around its nest. 



Snb-clags 2.— CI[JMS©I§ES, SCKATCIIIM^S BIISI>§. 

 Family 49. — Tetraonid^, the Grouse. 

 Tetrao ohscurus, var. riGliardsonii, Douglas, (Ricbardson's grouse :) 



No. 



Catalogue- 

 number. 



Sex. 



Date. 



Measure- 

 ments. 



Locality. 



185 

 192 



201 



62216 

 62217 

 62218 

 62219 

 62220 

 62221 

 62222 



9 



5 

 Juv. 



5 

 Juv. 



9 



July 23, 1872 

 July 27, 1872 

 July 30, 1872 

 July 30, 1872 

 Aug. 5, 1872 

 Aug. 5, 1872 

 Aug. 6, 1872 



18f X 281 

 20^ X 291 



Teton Canon, Idaho. 

 Do. 

 Do. 



202 





Do. 



216 





North Fork, Idaho. 



217 





Do. 



218 



18t X 29 



Do. 



Sal). — Central Eocky Mountains and nortbward. 



Tbis bird is easilj^ distinguisbed from tbe T. ohsctirus by tbe tail, wbicb 

 in tbe latter is broadly tipped witb ligbt slate, wbile iu T. riGliardsonii 

 tbe terminal baud is mucb narrower and more indistinct, or wanting en- 

 tirely. Tbe species was not abundant, being met witb cbiefly in tbe 

 T^tou Mountains. I obtained one of tbeir eggs in Teton Canon ; it 

 was ligbt colored, sparingly spotted witb brown. 



