XXXI 



4. Akdetta EX1I.IS (Gm.). 



Hah. Xorth America geuerfiUy, up to the Great Lake-? ; 

 soutli to TexaSj Florida. Calitbruiaj Guatemala, and the 

 Greater Antilles. Ardetta neuxena of Cory seems to be 

 founded on very old individuals of A. exUis, in "n"ljich the 

 rufous tips to the quills and tlie light stripes on the back 

 Lave disappeared ^ritli age or wear. 



5. Ardetta ehythro.melas (V.). 



Hnb. Represents A. ea-ilis in South America from Panama 

 to British Guiana and Trinidad^ and thence south to Paraguay 

 and Southern Brazil. It also extends to Peru, 



0. Ardetta pusilla (y.). 



Hub. Closely allied to A. e.vilisof^. America. Confined 

 to Australia and New Zealand, 



7. Ardetta EVRVTiniA, 



Hab. From North-eastern Siberia and Amurland, ex- 

 tending through all the Japanese islands to China, apparently 

 breeding on the Yangtze,, occurring in winter in Cochia 

 China and Borneo, 



8. Ardetta involitcris. 



Hab. Chili to Paraguay, Southern Brazil, and Northern 

 Patagonia. Recorded from Peru, but erroneously, as the 

 species from that country is A. erythromelas. 



9. Ardetta cinxamomea, 



Hab. From Araurlaud to China and Formosa, not occurring 

 in any of the Japanese islands, but throughout the Indian 

 Peninsula and Ceylon, the ]\Ialayan Peninsula and islands 

 to the Philippines and Celebes. 



Dr. Sharfe next drew attention to the distribution of 

 some species of the genus Nycticorax, especially to that of 

 the true Night- Herons. Between N. ncPv'tNS of North 

 America and the ordinary iY. nyciicorax of Europe he was 

 unable to find any specific difference, and therefore the range 

 of this species appeared to be bouvided by about 50° N. lat. 

 in both hemispheres, and beyond that line it could only 



