CULMEN AT WIDTH OF NO. SEX WING TAIL TARSUS BASE CULMEN 64,611 [Male] ad. 418 190 59 101 30 64,614 [Male] ad. 398 190 59 99 30 64,616 [Male] ad. 405 184 57 100 28 64,612 [Female] ad. 420 183 61 102 29 64,613 [Female] ad. 424 185 59 103 28 FREGATA MINOR MINOR (Gmelin). Six specimens, two adult males in full breeding plumage, three adult females and one immature male, from Cavilli and Bancoran Islands, Sulu Sea, March and September. I follow Rothschild in restricting Gmelin's name _minor_ to the bird of the eastern Indian Ocean, north Australia etc. (= _F. minor listeri_ Mathews), and with little doubt refer to this form the Philippine Frigate. The color of the bill in the three females is _bright pink_, not far from between France-pink and geranium-pink of Ridgway. The soft parts were described by Governor Forbes on the labels as--"Eyelid bright red: bill light pink, nail white, tip black; feet pale pink." The males all have dark bills, their soft parts were noted on the labels as--"Bill blue-black; feet dull brownish, with a slight reddish tinge." An adult female of _F. minor palmerstoni_ (Gmelin), shot by Flood, 29 September, 1895 at Molokai, H. I. (115,028 M. C. Z.) has a decidedly pinkish bill, the color of which was noted on the label as "light purple." Gmelin mentions the red bill in his short diagnosis of _minor_ and Edwards's plate to which he refers shows a female Frigate with a red bill. I have dwelt at the above length upon the red bill of the female of both _minor_ and _palmerstoni_ because it is a character that I have seen but little mentioned, and because I feel morally certain that the American bird--_Fregata magnificans_ Mathews according to Rothschild, _F. minor rothschildi_ Mathews according to Mathews--does not show it. We have a very large series of Frigate birds from America, and among the females none show any trace of reddish or pinkish on the bills, nor do I find the bill of the female described as pink on any label, or for that matter in any text-book. This being the case, it is a matter of much interest to know what forms have a pink bill in the female, and what do not. FREGATA ARIEL ARIEL Gray. Three specimens, from Tawi Tawi Island, two adult males and one adult female all taken 21 August, 1921. Compared with _Fregata ariel iredalei_ Mathews of the western Indian Ocean these are large birds with heavy bills, and appear wholly referable to true _ariel_ of Australia etc. MEASUREMENTS. CULMEN NO. SEX WING TO FEATHERS 86,492 [Male] ad. 501 87 86,493 [Male] ad. 491 89 86,491 [Female] ad. 552 92 BUTEO JAPONICUS (Temminck & Schlegel).