n& ON BIRDS FROM EUA, FRIENDLY GROUP. [NoV. 20, 



with specimens from the Navigators'. On the Central-Polynesian 

 Porphyria and its synonymy, cf. Finsch, Journ. fiir Ornith. 18/2, 

 p. 55. 



18. Anas superciliosa. 



Anas superciliosa, Linn. ; Layard, P. Z. S. 1876, p. 503. 

 Native name Toloa (Hiibner). 

 One female from Eua (August). 



19. Sterna bergii. 



Sterna bergii, Licht. ; Gygis, sp. ? Graffe, Journ. f. Orn. 1870, 

 p. 403. 



Native name Tola (Hiibner), Tula (Graffe). 



One specimen from Eua (August). 



Since the time of Latham the occurrence of this species on the 

 Tonga group has not been recorded ; but Mr. Layard also gives 

 evidence of its occurrence (P. Z. S. 1876, p. 503). 



20. Anous stolidus. 



Anous stolidus, L. 



Native name Gogo (Hiibner). 



One old and tvpo young specimens from Eua (August) ; the latter 

 liave the head and neck of a uniform sooty-brown ; but the feathers 

 on the forehead and vertex are acquiring greyish-white tips, so that 

 there can be no doubt that still younger birds are uniform sooty- 

 brown {A. rousseaui, Hartl.). 



According to Mr. Hiibner this species breeds on the rocks on the 

 east side of Eua. 



21. Anous albivittatus. 



Procelsterna albivitta, Bp. C. R. p. 773 (1856) ; Gould, Handb. 

 B. Austr. ii. p. 420. 



Native name Lefulefu (Hiibner). 



Two specimens, precisely alike, from Eua (August). 



This species, new to the avifauna of Tonga and Central Polynesia, 

 differs very strikingly from A. cceruleus, Bennett (A. parvulus, Gould, 

 A. cinereus, Neboux, nee Gould), in the pale grey colour of upper 

 parts and the delicate silvery greyish white of its head, neck, and 

 underparts. 



