948 BULLETIN UNITED STATES GEOLOGICAL SURVEY. [Vol.y. 



1650. Bell, T. Remarkable Act iu a Duck [Cairiua moscluita]. <^ZooIo(iisf, viii, 



1850, pp. 2652, 2653. 

 1850. Cassln, J. Notice of an Americau species of Duck [O. velvetiua n. sp. ] hith- 

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



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

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



ham Waters. <_Zoolofji8f, viii, 1850, pp. 2879, 2880. 

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



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

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

 1850. Duff, J. Occurrence of Rare Anatida?, &c., near Bishop Auckland. <^ Zoolo- 

 gist, viii, 1850, p. 2773. 

 1850. Ellman, J. B. Occurrence of the Egyptian Goose [Chenalopex SBgyptiacus] at 



Pevensey, Sussex. <^ Zoologist, viii, 1850, ji. 2773. 

 1850. Ellman, J. B. Occurrence of Rare Anatidge in Sussex. < Zoologist, viii, 1850, 



p. 2773. 

 1850. Foster, T. W. Occurrence of the Pink-footed Goose (AnseT 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 ferus) 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, 



tiii, 1850, pp. 2774, 2775. 

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



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

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

 densis] and a Bemicle Goose [Bernicla leucopsis]. <^ ZooZo^t6<, viii, 1850, p. 



2969. 

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



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

 1850. HiGGiNS, 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. [Jaedine, W,] Casarca leucoptera, Blyth [n. sp.]. <^Jard. Contnl).Orn.,\8bO, 



p. 141, pi. Ixiv. 

 1850. Jones, J. M. Occnrrenceof the Merganser (Merganser [Mergits] 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. JIatthews, a., and Matthews. H. Reply to Mr. Gurney's Inquiry [Zool., 



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



1850, pp. 2740, 2741. 

 1850. Milner, W. M. E. Occurrence of the Pink-footed Goose (Anser branchy- 



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 o'f the Swan Goose (Anser [Cygnopsis] Cygnoidesj 



in Norfolk. <^ Zoologist, viii, 1850, p. 2705. 



