On some Species of the Genus Thalassogerou. 503 



XXIX. — Notes on some Species of the Genus Thalassogeron. 

 By T. Salvadori, Hon.IM.B.O.U. 



(Plate XIX.) 



In Mr. DuCane Godmau^s " Monograph of the Petrels/ 

 at tlie end there is a classification. At p. liv there is a key 

 to the species of the genus Thalassogeron, which are divided 

 into three heads : — 



a. Culmen in adult bright j'ellow, sides of the bill black. 



b. Bill generally pale, the sides not black, a.ud the culmen not 



distinctl}' yellow. 



c. Bill entirely black, including the culmen. 



The object of this paper is to offer some remarks as 

 regards the species of the first and third groups. 



The third group contains only one very rare species : — 



Thalassogeron carteri. 



Thalassogeron carteri Rothschild; Bull. B. O. C. xiv. 1903^ 

 p. 6 : N.W. Australia; Godman, Mon. of the Petrels, 1910, 

 p. 361, pi. 102 a. 



Diomedea carteri Rothsch. Bull. B. O. C. xv. 1904, p. 44: 

 Gough Isl. ; Mathews, Nov. Zool. xviii. 1911, p. 206. 



Thalassogeron sp. inc. Eagle Clarke, Ibis, 1905, p. 265 : 

 Gough Isl. 



Mr. Mathews (/. c.) mentions this species as known from a 

 unique specimen, the type, but it appears that a second 

 specimen is the one Irom Gougli Island, admitting that it 

 belongs to the same species. 



During a visit of the Hon. W. Rothschild to the Museum 

 of Turin, some years ago, he pointed out to me that among 

 our Albatrosses there is one which he recognised as belonging 

 to T. carteri. This precious specimen agrees pretty well 

 with the figure in the 'Monograph of the Petrels,' except in 

 tlie bill, which is not so deeply black ; it was collected 



