54G 



BIRDS OF THE GALAPAGOS ABCHIPELAGO—RIDGWA Y. vol. xix. 



eK Wins less than 2.70. 

 /'. Cnluiea 0.50 or more. 



(7'. Larger, the bill especially (culmcn 0.53, basal width of mandi- 

 ble 0.29). (James Island) 9. C. hurrtitH (p. 5G0). 



(/'-. Smaller, especially the bill (cnlnien 0.50-0.52, basal width of 

 mandible not more than 0.25). (Chatham Island.) 



10. ('. sdlvini (p. .561). 

 /- Culmen less than 0.50 (abont 0,45). (James, Jervis, Indefatigable, 

 Albemarle, and Charles islands) ..11. C. jiroHthemclas (p. .563). 

 h'^. Basal depth of bill decidedly less than length of maxilla from nostril. 



( Cactospiza. ' ) 

 c'. Larger and jialer (wing 2.72-3, enlmen 0.70-0.77, tarsus 0.92-0.01). .lames, 



Jervis, and Indefatigable islands) 12. C. pallidas (]>. 505). 



C-. Smaller and deeper colored (wing 2.05-2.90, culmen 0.67-0.69, tarsus 0.89- 

 0.90). (Albemarle Island) 13. C. productus (it. 566). 



A.SCEKTAINEO RANGE OF TIIK GENT'S CAMARIIYNCIIUS, (lOULD. 



a. Subgenus PLATYSPIZA, Eidgway. 



1. Caiuarhipichnit rariefiaitta, Sclater and Salvin. 



2. Camavhiinchun craaairoslris, Gould. 



' New subgenus. Type, Cactornis pallida, Sclater and Salvin. 



