SYSTEMATIC TABLE 



Of the Birds of AmGrica north of Mexico, arranged according 



to the American Ornithologists' Union's 'Check-List 



of North American Birds', Third Edition 



1910, and Supplement*, July, 1912. 



(The presence of brackets, [ ], indicates that the species is an accidental visitant). 



Order PYGOPODES. Diving Birds 



Family COLYMBID.^. Grebes. 



A.O.U. 



No. COMMON NAME SCIENTIFIC NAME Paqe 



1 Western Grebe .Echmorphorus occidentalis ^ 1 



2 Holbcell's Grebe Colymbus holbcelli 43 



3 Horned Grebe " auritus 43 



i Eared Grebe " nigricollis californicus. . 43 



5 Mexican Grebe '* dominicus brachypterus 43 



6 Pied-bill Grebe Podilymbus: podiceps 43 



Family GAVIID^. Lo'ons 



V Loon Gavia immer 44 



8 Yellow-billed Loon " adamsi 44 



9 Black-throated Loon " arctica 44 



10 Pacific Loon " parim^a 44 



11 Eed-throated Loon '. " stellata 44 



• The Auk, xxix, 1912, pp. 380-387. 



t Note that trinomials are now employed for all the races of a species in- 

 ■cluding the first one described. Hence in place of No 13, Puffin, Fraiemila 

 urvtica, we now have No, 13, fuffln, FratereiUa arctica arctica. (See pages 6 and 

 7 for an explanation of this method.) 



§ Note also that in accordance with a ruling of the A. O. U,, the apostrophe 

 is uaed with the ioames of birds named after individuals. Thus in place of No. 

 16, Cassin Auklet, we have No. Ifi, Casfiin's Anklet/ These changes affect all 

 similar cases throughout the Color Key. After identifying a species, therefore, 

 the student should turn to its number in the Systematic Table to learn whether 

 any change has been made in its name. All alterations other than those of 

 mere nomenclature are given beyond in Appendix I. 



257 



