BIRDS OF NORTH AND MIDDLE AMERICA. 477 



ee. Bill narrower (depth at base 9.40, width of luandilile at ])ase 7.62. 



(Charles Island.) Camarhynchns pauper (p. 483) 



dd. Bill smaller (culmen not more than 18.46). (Albemarle and Xarborough 



islands. ) Camarhynclius affinis (p. 481 ) 



CQ. Smaller (wing not more than 64.77, culmen not more than 12.19, usually 

 decidedly less. (Indefatigable, Duncan, Albermarle, Narborough, James, 

 .Tervis, Charles, Gardner near Charles, Barrington, and Cowley islands. ) 



Camarhynchus prosthemelas (p. 484) 

 hh. Head, neck, and chest not black. (Adult females, and immature birds; adidt 

 male of at least one species. ) 

 c. Larger, with stouter bill (wing 65.28 or more, depth of bill at T)ase 10.16 or 

 more). 

 d. Bill broader (width of mandible at base equaling or exceeding length of 

 gonys). 



e. Bill longer (culmen 16.26or more) Camarhynclius habeli, female ( p. 480) 



ee. Bill shorter (culmen not more than 15.49). 

 /. Larger (wing averaging 68.58, culmen averaging 14.73, width of mandi- 

 ble at base averaging 8.38, depth of bill at base averaging 10.92, tarsus 



averaging 23.11) Camarhynclius psittaculus, female (p. 478) 



ff. Smaller (wing averaging 67.56, culmen 14.48, width of mandible at 

 base 7.62, depth of liill at base 10.16, tarsus 21.59). 



Camarhynchus aflBnis, female (p. 481) 



dd. Bill narrower (width of mandible at base decidedly less than length of 



gonys). (James Island. ) . . Camarhynchus compressirostris, female (p. 481) 



cc. Smaller, with narrower bill (wing not more than 63.50, or else depth of bill 



at base not more than 8.89). 



d. Wing, 66.80-68.58. 



e. Gonys, 7.62; plumage not yellowish below. 



Camarhynclius pauper, female (p. 484) 

 ee. Gonys not more than 7.11; })lumage yell< )wisli 1 )elow. ( Chatham Island. ) 



Camarhynchus salvini, larger males (p. 486) 

 dd. Wing less than 66.80. 



e. Plumage yellowish below; wing 62.23 or more; gonys 6.35 or more. 

 /. Bill stouter (width of mandible at base 7.37; depth of bill at base 

 more than 8.89.^ (James Island.) 



Camarhynchus incertus, female (p. 482) 

 ff. Bill narrower (width of mandible at base not more than 7.11; depth 

 of bill at base not more than 8.89). (Chatham Island.) 



Camarhynchus salvini, female and smaller males (p. 486) 

 ee. Plumage not yellowish below; wing not more than 60.96; gonys not 



more than 5.84 Camarhynchus prosthemelas, female (p. 485) 



aa. Basal depth of bill decidedly lessthan length of maxilla from nostril. ( Cactospiza. ) 

 (Indefatigable, Duncan, Jervis, James, and Albemarle islands; Chatham 

 Island?) Camarhynchus pallidus, male and female (p. 487) 



CAMARHYNCHUS PSITTACULUS Gould. 

 PARROT GROUND FINCH. 



Bill short and stout, its depth at base much exceeding- distance from 

 nostril to tip of maxilla, and width at base usualh" decidedly greater 

 than length of gonys, never decidedl}^ less. 



'When I had the opportunity of examining the type specimen of this form I 

 neglected to measure the depth of the bill. 



