488 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Male.— l^ength (skins), about 121.92-144.78; wing, 71.63-76.20 

 (73.91); tail, 45.72-46.99 (46.23); culmen, 17.02-19..56 (18.54); gonvs, 

 8.38-9.91 (9.40); depth of bill at base, 8.38-9.91 (9.40); width of man- 

 dible at base, 6.86-7.87 (7.37); tarsus. 22.86-23.88 (23.37); middle toe, 

 16.49-17.27 (16.51). ' 



JFe7nale.--hQngth (skins), about 113.03; wing-, 67.31-69.09 (68.33); 

 tail, 40.13-43.18 (41.66); culmen, 17.02-17.78 (17.53); gonys, 7.87-9.91 

 (8.89); depth of bill at base, 8.38-9.65 (8.89); width of mandible at 

 base. 7.11-7.62 (7.37); tarsus, 22.61-23.37 (22.86); middle toe, 15.24- 

 16.76 (15.75).' 



Galapag'os Archipelago (Indefatiga))le, Jervis, Duncan, James, and 

 Albemarle islands; Chatham Island ?).'* 



Caciornis paUldaScL,ATETi and Salvin, Proc. Zool. Soc. Lond., 1870, 323, 327 (Inde- 

 fatigable I., Galapagos Archipelago; coll. Salvin and Godman).* — Salvix, 

 TranH. Zool. Soc. Lond., ix, pt. ix, 1876, 487.— Sharpe, Cat. Birds Brit.Mus., 

 xii, 1888, 20 (Indefatigable I.). 



\_Cactornis'\ 2^allida Sclater and Salvix, Nom. Av. Neotr., 1873. 29. 



Cactornis pallida Sclater and Salvin?, Ridgway, Proc. U. S. Nat. ]\Ius., xii, 

 1890, 109 (James I.). 



Cactornis pallida Baur, Am. Nat., xxxi, 1897, 782 (Dnncan I.) , 783 (Chatham and 

 Jervis islands). 



Camarhynchus pallidus Ridgway, Proc. U. S. Nat. Mus., xix, 1897, 565, pi. 56, 

 fig. 7 (monogr. ; Indefatigable, Jervis, and James islands). 



females, but in that case several of our birds from different collections M'ould be 

 wrongly sexed." 



Without having seen the series in question I would not venture a positive opinion 

 as to this question, but would suggest that possibly the most yellowish birds without 

 distinct streaks are freshly molted adults, the distinctly streaked ones the young. 



' Three specimens, immature. Messrs. Rothschild and Hartert give extreme 

 measurements (number of specimens not stated) as follows: Wing, 76.00-78.00; tail, 

 47.00-49.00; culmen, 17.00-18.00; tarsus, 23.00-24.00. 



^ Three specimens, one of them apparently adult. Rothschild and Hartert give 

 the following ineasurements for females: Wing, 73.00-74.00; culmen, 16. 

 . Specimens from different islands examined by me measure as follows: 



Locality. 



Wing. Tail. 



Cul- 

 men. 



Gonys. 



Depth 

 of bill 

 at base. 



Width 

 of man- 

 dible 

 at base. 



Tarsus. 



Middle 

 toe. 



MALES. 



One (immature?) from James Island 

 (type of C. hypolcucus) 



One (immature) from Jervis Island. 



One (immature?) from Albemarle 

 Island (type of C. productus) 



One (adult?) from James Island — 



Two (immature?) from Albemarle 



Island (average) 



76.20 

 71.63 



73.66 



69.09 

 07. 82 



45.72 

 46.99 



45. 72 



41. 06 

 41.66 



19.56 ! 9.91 

 9.91 



19.05 



17.27 



8.13 



17.78 ; 9.65 

 17.27 ' 8.64 



23.88 

 23. 62 



22.86 



23. 37 

 22. 74 



17.27 

 16.51 



15.49 



16.76 

 15. 24 



9.91 

 9.65 



8.38 



9.91 

 8.26 



7.87 

 7.62 



6. 86 



7.62 

 7.11 



' Rothschild and Hartert, Novit. Zool., vi, 1899, n. 166. 

 •* Now in the British Museum collection. 



