AVIFAUNA OF LAYS AN, ETC. 



297 



Dole (Proc. Boston Soc. Nat. Hist. 1869, p. 308, and Hawaii. Aim. 1879, p. 58) records 

 Thaethon cethereus from the Islands, hut he gives no details nor exact locality. Unfortunately, 

 by an error, writing from memory, I had written to Mr. Scott Wilson that Palmer obtained 

 P. cethereus, while in fact he only got P. lepturus. I need not say that I am very sorry for 

 my mistake. According to Mr. Wilson, Mr. Perkins states that he met with JPh. cethereus 

 on the cliffs round Honolulu and elsewhere " breeding not uncommonly on the rocky ledges." 

 As no specimen of JPh. cethereus, but only P. lepturm (=candidus), has been so far produced 

 from the Sandwich Islands, I have no doubt that Hole and Perkins were mistaken in their 

 identifications, and that the white-tailed Tropic-birds which breed on the Hawaiian Islands 

 are all P. lepturm and not P. cethereus. 



94. PRE GAT A AQTJILA (X.). 

 IWA. 



Fregata aquila, Stejneger, Proc. U.S. Nat. Mus. 1888, p. 102 (Kauai) j antea, p. 21 (1893) j Grant, Cat. B. 



Brit. Mus. xxvi. p. 443 (1898) ; Wilson & Evans, Aves Hawaii, pt. vii. (text) (1899). 

 7 "achy petes palmer st.oni, Dole, Hawaii. Aim. 1879, p. 58. 



On the islands of the Hawaiian possessions at least the first plumage shows the head, 

 neck, and chest cinnamon-rufous, and, so far as we can ascertain, this is not proved to be the 

 case elsewhere. 



According to Hole, Kittlitz states that this bird breeds on " Nihoa," but so far I have 

 been unable to find where he made this statement. Mr. Perkins saw it on Oahu, and 

 Mr. Knudsen obtained a female on Kauai. 



The photograph of a young bird opposite to p. 21 is wrongly lettered as that of a young 

 Frigate Bird ; it is, however, the young of the Red-footed Booby (Suta piscatrix) ! 



95 SULA SULA (£.)■ 

 Antea, p. 29; Cat. B. Brit. Mus. xxvi. p. 436 (1898). 



This species is recorded from off the island of Niihau. 



Palmer never saw a single specimen of this bird on Laysan, and it remained to 

 Professor Schauinsland to procure it there. He sent me an adult male which he captured 

 on August 29th, 1897. "Bill pale greenish blue; face and gular sac azure-blue; eyelids of 

 a darker blue. Peet light bluish green. Iris pale grey." 



96. SULA PISCATRIX (X ). 



Antea, p. 27; Cat. B. Brit. Mus. xxvi. p. 432 (1898). 



This Gannet, as might be expected, has been recorded as an occasional visitor to the seas 

 round the northern Hawaiian Islands. 



Also of this species Professor Schauinsland sent a fine series, showing every gradation 

 from the downy young of a few days' old to the fully-adult white breeding-plumage. The 



