Mr. D. G. Elliot on New Species of Birds. 391 



13. Circus cineraceus (Mont.). (Montague's Harrier.) 



14. Circus ^ruginosus (Linn.). (Marsh Harrier.) 



15. Sybnium aluco (Linn.). (Tawuy Owl.) 



16. Brachyotus palustris (Bp.). (Common Short-eared 



Owl.) 



[In enumerating the authorities on the birds of Syria and 

 Palestine, in reference to Mr. Tristram's article on the " Orni- 

 thology of Southern Palestine/' in No. 1 of ' The Ibis ' [vide 

 antea, p. 38), we omitted to mention the name of the Marchese 

 Orazio Antinori, who has made some interesting discoveries in 

 the ornithology of those countries — Cypselus galilceensis and 

 Picus cruentalus, described in * Naumannia' (v. p. 307, and vi. 

 p. 411). Mr. Gurney's present contribution towards our know- 

 ledge of the birds of this country gives us an opportunity of 

 supplying this omission. — Ed.] 



XXXVIII. — Descriptions of Six New Species of Birds. 

 By Daniel G. Elliot, of New York. 



(Plate XIII.) 



1. Thalassidroma gracilis, Elliot, sp. nov. 

 Nigro-fuliginosa, fascia alari pallidiore; uropygio abdomineque 

 medio albis ; rectricibus nigerrimis ; cauda emarginata : 

 rostro et tarsis gracillimis nigris. 



Sp. Ck, Plumage sooty black. Quill feathers brown. Se- 

 condary coverts margined with light brown. Bump, upper 

 tail-coverts, and middle of abdomen white. Tail black, the two 

 outer feathers with a white mark on the lower half of the inner 

 web, growing narrower as it ascends ; lower half of the shafts 

 white, the rest black. Under tail-coverts white, margined with 

 black. Breast sooty. Bill black. Tarsi and feet very long 

 and slender, black. Length 5*90; wing 5-22; tail2'40; bill 

 0-40; tarsus 1-20. 



Hah. West Coast of America. 



Remarks. This species is very abundant on the coast of Chili, 

 only coming to the mainland in the breeding-season. During that 

 period, for a great part of the day and night they I'etire to the 

 clefts of the rocks, taking flight only in the early morning. The 



