550 



PROCEEDING.^ OF THE NATIONAL MUSEUM. 



VOL. 43. 



Type-locality. — Indefatigable Island, Galapagos Islands. 



Geographical distrihution. — Galapagos Islands: Indefatigable, Dun- 

 can, Albemarle, and probably other islands of the archipelago. 

 Doubtless permanently resident. 



Notwithstanding its far isolated range, this subspecies much more 

 closely resembles the pale races of North America and the West 

 Indies than it does the very dark form of Mexico and Central Amer- 

 ica. It differs from Ardea herodias treganzai in paler neck, stouter 

 bill, and shorter tarsus; from Ardea herodias- wardi in lighter neck, 

 stouter bill, and shorter wing and tarsus. 



One of the specimens examined (No. 116138, U.S.N.M., Duncan 

 Island) is not fully adult and is more brownish, somewhat darker 

 above than the two adults. This race is doubtless peculiar to the 

 Galapagos Archipelago, and probably occurs on many of the islands. 



Only three examples have been seen, from the following localities, 

 breeding records being distinguished by an asterisk: 



Galapagos Islands. — Indefatigable Island; Duncan Island;* Albe- 

 marle Island.* 



Measurements of specimens of Ardea herodias cognata. 



Maseum and No. 



U.S.N.M. 1890211 



U.S.N. M. 11613S1 



A.E.and O. Bangs, 

 12451. • 



Sex. 



[Male] 



[Female] 



...do.. 



Locality. 



Al b e m arle 

 Island , 

 Galapagos 

 Islands. 2 



Duncan Is- 

 land, Gal- 

 apagos Is- 

 lands. 



I n d efatiga- 

 b 1 e I s- 

 land, Gala- 

 pagos Is- 

 lands.2 



Date. 



Apr. 4, 1902 

 Apr. 13,1888 

 Feb. 16,1901 



Collector. 



R.H. Beck. 



R. H. Beck. 



mm. 

 114 



I Used in measurement averages on p. 549. 



■' Type. 



ARDEA HERODIAS HYPERONCA, new subspecies. 



Chars, suhsp. — Like Ardea herodias herodias in color, but in size 

 decidedly greater throughout. 



Description. — Type, adult male, No. 98486, U.S.N.M.; Baird, 

 California, March 3, 1884; Charles H. Townsend. Sides of crown and 

 long, slender, pointed occipital crest, black; forehead, center of 

 crown, short vertical crest, superciliary stripe, malar region, cheeks, 

 chin, and middle of upper throat, white; neck all around very deep 

 drab gray, somewhat lighter anteriorly, the middle line of fore- 

 neck streaked with black, white, and cinnamon rufous; upper sur- 



