294 BIEDS FROM GA LA PA G OS ARC HI PEL AG O—RIDG WA Y. vol. xviii. 



The specific name is suggested by the tedious character of the work 

 involved in discriminating the forms of this extremely difficult grouj) 

 of birds. 



CAMARHYNCHUS BINDLOEI, new species. 



Specific characters. — Similar to C. haheli, Sclater and Salvin, of Abing- 

 don Island, but rather larger, with decidedly larger bill, the latter with 

 culmen much less compressed. Adult, male (type) : Wing, 2.92 inches; 

 tail, 1.82 : culmen, 0.68 ; depth of bill at base, 0.31 ; gony s, 0.33 ; width of 

 mandible at base, 0.45; tarsus, 0.85; middle toe, 0.60. 



Range. — Galapagos Archipelago (Bindloe Island). 



Type in collection of Dr. G. Baur. 



CAMARHYNCHUS COMPRESSIROSTRIS, new species. 



Specific characters. — Adult male unknown. Adult female similar to 

 that of C. psittaculus, Gould, but smaller, with the bill much narrower, 

 more compressed, and with straighter culmen; basal width of mandible 

 (across chin) less than length of gonys, instead of greater, and basal 

 depth of bill less than length of maxilla from nostril. Measurements 

 of type: Wing, 2.57 inches; tail defective; culmen, 0.60; basal dei)th 

 of bill, 0.40; gonys, 0.32; basal width of mandible, 0.29; ta-.sus, 0.90; 

 middle toe, 0.60. 



Range. — Galapagos Archipelago (Jervis Island). 



Type No. 471, collection of Dr. G. Baur, Jervis Island, August 8, 1891. 



CAMARHYNCHUS INCERTUS, new species. 



Specific characters. — (Adult male unknown.) Adult female most 

 like that of C. compressirostris, of Jervis Island, but smaller (the bill 

 especially), with upper parts brighter olivaceous and under parts 

 distinctly yellowish buff. Similar in color to C. salvini, Ridgway,' of 

 Chatham Island, but much larger. Measurements of the type: Wing, 

 2.50 inches ; tail, 1.50 ; culmen, 0.53 ; gonys, 0.29 ; basal width of mandible, 

 0.29; tarsus, 0.82; middle toe, 0.57. 



Range. — Galapagos Archipelago (James Island). 



Type No. 521, collection of Dr. G. Baur, James Island, August 13, 1891. 



H'nmarhynchxis salvini, Ridgway, Proc. U. S. Nat. Mus., XVII, No. 1007, Nov. 15, 

 1894, p. 364. 



