Birds of Prince s Island. 62.1 



seen." Dohrn saw this bird a few times flying about the 

 coast of the island. 



Count Salvadori is not sure that the species of Tropic- 

 bird recorded from Prince's Island has been correctly de- 

 termined, and thinks that it may prove to be P. candidus 

 { = P. Upturns Daud.), to which form it was doubtfully 

 referred by Keulemans. 



I have not any specimens from Prince's Island, but Boyd 

 Alexander obtained four Tropic-birds from the llha das 

 Cabras (off St. Thomas' Island) which prove to be P. lep- 

 turus, and there are two examples in the British JNIuseum 

 from the same locality belonging to this species. 



We may therefore safely assume that it was Phaethon 

 lepturiis which Dohrn and Keulemans saw in the neighbour- 

 hood of Prince's Island, and not P. ather'eus. Apparently 

 it has never yet been recorded as breeding anywhere on 

 Prince's Island. 



While dealing with this species it may be as Avell to 

 remark that Phaethon lepturus has, in adult specimens, the 

 entire plumage washed with pale salmon-colour. Although 

 this salmon-tint is not nearly so strong as the apricot tinge 

 in freshly killed examples of P. fuluus, yet it is very striking, 

 and the general colour of the plumage of P. lepturus is 

 therefore not always "pure white," which is the character 

 given for this species in the key on p. 451 of the ' Catalogue 

 of Birds,' vol. xxvi. 



The four skins obtained by Boyd Alexander in 1909 have 

 now lo&t very little of their beautiful pink colouring. 



28. Sula STila. 



Sula leucogastra (Bodd.) ; Salvadori, Orn. Golfo d. 

 Guinea, i. 1903, p. 15; Bocage, Jorn. Sci. Lisboa, 1903, 

 p. 52. 



The Booby has been mentioned by most writers on 

 Prince's Island. Dohrn wrote that it was common on the 

 west coast of the island, and Keulemans makes the same 

 remark, adding that the Booby nests from December to 

 January, on rocks. 



SER. X. — VOL. ir. 2 T 



