1914] Grinnell: Mammals and Birds of the Colorado Valley 113 



120. Dendroica aestiva brewsteri Grinnell 



121. Dendroica aestiva rubiginosa (Pallas) 



122. Dendroica auduboni auduboni (Townsend) 



123. Dendroica nigrescens (Townsend) 



124. Dendroica townsendi (Townsend) 



125. Dendroica occidentalis (Townsend) 



126. Oporornis tolmiei (Townsend) 



127. Geothlypis trichas scirpicola Grinnell 



128. Geothlypis trichas occidentalis Brewster 



129. Icteria virens longicauda Lawrence 



130. Wilsonia pusilla pileolata (Pallas) 



131. Wilsonia pusilla chryseola Ridgway 



132. Anthus rubeseens (Tunstall) 



133. Oreoscoptes montanus (Townsend) 



134. Mimus polyglottos leucopterus (Vigors) 



135. Toxostoma crissale Henry 



136. Heleodytes brunneicapillus couesi (Sharpe) 



137. Salpinctes obsoletus obsoletus (Say) 



138. Catherpes mexicanus conspersus Ridgway 



139. Thryomanes bewicki eremophilus Oberholser 



140. Troglodytes aedon parkmani Audubon 



141. Telmatodytes palustris plesius (Oberholser^ 



142. Auriparus flaviceps flaviceps (Sundevall) 



143. Regulus calendula cineraceus Grinnell 



144. Polioptila caerulea obseura Ridgway 



145. Polioptila plumbea (Baird) 



146. Hylocichla ustulata ustulata (Nuttall) 



147. Hylocichla guttata guttata (Pallas) 



148. Hylocichla guttata nanus (Audubon) 



149. Planesticus migratorius propinquus (Ridgway) 



150. Sialia mexicana occidentalis Townsend 



GENERAL ACCOUNTS OF THE BIRDS : 



RECORD OP SPECIMENS, DISTRIBUTION, VARIATION, 



BIOGRAPHICAL NOTES 



Gavia immer (Briionich) 



Common Loon 



There is in the Museum an adult-plumaged female specimen (no. 

 6403) of this species taken (probably by W. W. Holder) at "Mineral 

 City in Colorado River" (=Ehrenberg) April 4, 1864. 



