948 BULLETIN UNITED STATES GEOLOGICAL SURVEY. [FoLV. 



1850. Bell, T. Remarkable Act in a Duck [Cairina moscliata]. <^Zooloq>st, viii, 

 1850, pp. 2652, 2653. 



1850. Cassin, J. Notice of an American species of Duck [O. velvetina n. sp.] hith- 

 erto regarded as identical with the Oidemia fusca, (Linn. ) < Proc. Acad. Nat. 

 Sci. Phila. , v, Dec. , 1850, pp. 126, 127. 



1850. Cooke, R. B. Tufted Duck (Anas fuligula [Fuligula cristata]) breeding in Mal- 

 ham Waters. <^ZooIogist, viii, 1850, pp. 2879, 2880. 



1850. Davt, J. Notice of a peculiarity of Structure observed in the Aorta of the 

 Wild Swan [Cygnus ferns]. < Ann. Mag. Nat. Hist.,v, 1850, pp. 139, 140. 

 From P. Z. S., Mar. 13, 1849, pp. 28, 29. 



1850. Dupe, J. Occurrence of Rare Anatidse, &c., near Bishop Auckland. <^ Zoolo- 

 gist, viii, 1850, p. 2773. 



1850. Ellmajst, J. B. Occurrence of the Egyptian Goose [Chenalopex segyptiacus] at 

 Pevensey, Sussex. < Zoologist, viii, 1850, p. 2773. 



1850. ELLMAJf, J. B. Occurrence of Rare Anatidse in Sussex. < Zoologist, viii, 1850, 

 p. 2773. 



1850. Foster, T. W. Occurrence of the Pink-footed Goose (Anser brachyrhynchus) 

 and Brent Goose (Anser [Bernicla] Breuta) near Wisbeach. < Zoologist, viii, 

 1850, pp. 2772, 2773. 



1850. Foster, T. W. Occurrence of the Wild Swan (Cygnus ferns) and Bewick's 

 Swan (C. Bewickii) near Wisbeach, < Zoologist, viii, 1850, p. 2773. 



1850. Foster, T. W. Occurrence of the Goosander (Mergus Merganser), Red-breasted 

 Merganser (M. Serrator), and Smew (M. albellus) [in England]. < Zoologist, 

 viii, 1850, pp. 2774, 2775. 



1850. Grantham, G. Occurrence of the Egyptian Goose (Anser [Chenalopex] -^gyp- 

 tiacus) in Sussex. < Zoologist, viii, 1850, pp. 2772, 2773. 



1850. GURNEY, J. H. A Hybrid between a Cravat Canada Gander [Bernicla cana- 

 densis] and a Bernicle Goose [Bernicla leucopsis]. < ZooZo^isi, viii, 1850, p. 

 2969. 



Ib50. Hall, T. Occurrence of the Red-breasted Merganser (Mergus Serrator) in the 

 Thames. < Zoologist, viii, 1850, p. 2775. 



1850. HiGGlNs, E. T. Description of a Duck shot near Dunbar. < Zoologist, viii, 

 1850, pp. 2773, 2774. 



1850. Hope, W. J. Occurrence of the Goosander (Mergus merganser) on the Severn. 

 < Zoologist, viii, 1850, p. 2853. 



1850. [Jardine, W.] Casarca leucoptera, Blyth [n. sp.]. <Jarf7. Contrib.Orn., 1850, 

 p. 141, pi. Ixiv. 



1850. Jones, J. M. Occurrence of the Merganser (Merganser [Mergus] serrator) near 

 Montgomery. < Zoologist, viii, 1850, pp. 2705, 2706. 



1850. K[iRTLAND], J. P. Editorial Correspondence. < The Family Visitor, i, No. 9, 

 1850, p. 72. ■ 



Relating to domestication of Aix sponsa. 



1850. Matthews, A., ami Matthews, H. Reply to Mr. Gurney's Inquiry [ZooL, 

 p. 2622] respecting the Gray-legged Goose [Anser ciuereus]. < Zooloqist, viii, 

 1850, pp. 2740, 2741. 



1850. MiLNER, W. M. E. Occurrence of the Pink-footed Goose (Anser braoichy- 

 rhynchus [sic]) near York. < Zoologist, viii, 1850, p. 2705. 



1850. Newman, E. occurrence of the Bimaculated Duck (Anas glocitans) in the 

 Fens of Lincolnshire. < Zoologist, viii, 1850, p. 2652. 



1850. Newman, E. Occurrence of the Swan Goose (Anser [Cygnopsis] Cygnoides; 

 in Norfolk. .<ZooZo(/isi, viii, 1850, p. 2705. 



I 



