BIKDS OP NOKTH AND MIDDLE AMEEICA. 477 



ee. Bill narrower (depth at base 9.40, width of mandible at base 7.62. 



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



dd. Bill smaller (culmen not more than 13.46). (Albemarle and Narborough 



islands. ) Camarhynolms affinis (p. 481) 



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

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

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



Camarhyncliua prosthemelas (p. 484) 

 bb. Head, neck,, and chest not black. [Adult femcdeB and immature birds; adult 

 male of at least one species. ) 

 c. Larger, with stouter bill (wing 65.28 or more, depth of bill at base 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) Camarhynchua 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) Camarhynolms psittacnlus, female (p. 478) 



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

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



Camarhynchus affinis, female (p. 481) 



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



gonys) . (James Island. ) . .Camarliynclnis 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. 



Camarliynclnis pauper, female (p. 484) 

 ee. Gonys not more than 7.11; plumage yellowish below. (Chatham Island.) 



Camarhyuclius salvini, larger males (p. 486) 

 (?(?. 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.) 



Camarliynchns 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.) 



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

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



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



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

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

 Island? ) Camarhynohus pallidns, male and female (p. 487 ) 



CAMARHYNCHUS PSITTACULUS Gould. 

 PAKROT GROUND FINCH. 



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

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

 than length of gonys, never decidedly less. 



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

 neglected to measure the depth of the bill. 



