1040 BULLETIN UNITED STATES GEOLOGICAL SUEVEY. Wol.r. 



1849. GURXEY, J. H. Occurrence of the Eared Grebe (Podiceps auritus) in Norfolk. 



< Zoologist, Tii, 1849, p. 24r)6. 



1850. Ellmajn, J. B. Occurrence of the Schivonian Grebe (Podiceps cornutiis) at Pid- 



dinghoe, Sussex. <^ Zoologist, viii, 1850, p. 2775. 



1850. Foster, T. W. Occurrence of the Eared Grebe (Podiceps auritus) on Whittle- 

 sea Wash. <^ Zoologist, viii, 1850, p. 2775. 



1850. Garth, J. C. Occurrence of the Red-necked Grebe (Podiceps rubicollis [sic]) 

 near Burton-on-Trent. <^ Zoologist, viii, 1850, p. 2706. 



1850. Plant, J. Occurrence of the Horned Grebe (Podiceps cornutus) at Manchester. 



< Zoologist, viii, 1850, p. 2924. 



1850. RouD, E. H. Occurrence of the Red-necked Grebe (Podiceps ruficoUis) near 



Penzance. <^ Zoologist, viii, 1850, p. 2803. 

 1850. SuNDEVALL, C. J. Podiceps arcticus, cornutus, auritus. <^ Ofvers. Kongl. Ve- 



tensk.-Alcad. Forhandl. for dr 1849, 1850, pp. 206-210. 

 P. auritus Ti. = P. cornutus Lath. + P. arcticus. P. nigricollis, n. sp. ^ P. auritus auct. 



Cf. Vet.-Akad. Arsb. i Zool., 1845-50, p. 299; Arch.f. Naturg., xvi, 1850, p. 44. 



1850. SUNDEVALL, C. J. Ueber Podici^ies arcticus, comutus, auritus. <^Arch.f. Na- 



turg., 1850, (1), pp. 44-48. 

 Au8 Ofv. K. Yet.-Akad. Fdrh., aus d. Jahr 1849, SS. 206-210, q. v. 



1851. Green, J. Occurrence of the Eared Grebe (Podiceps auritus) at Yarmouth. 



<^ Zoologist, ix, 1851, p. 3175. 



1851. Irby, L. H. Occurrence of the Red-necked Grebe (Podiceps rubricollis) in Dev- 

 onshire. <^ Zoologist, ix, 1851, p. 3035. 



1851. Joshua, W. Occurrence of the Rednecked Grebe (Podiceps rubicollis [sic]) in 

 Gloucestershire. <^ Zoologist, ix, 1851, p. 3056. 



1851. Strangewayes, R. Occurrence of the Eared Grebe (Podiceps auritus) at Yar- 

 mouth. <^Zoo?0(/i-5f, ix,1851,p. 3117. 



1851. Strangewayes, R. The Great Crested Grebe (Podiceps cristatus) in Norfolk. 



< Zoologist, ix, 1851, p. 3209. 



1'851. [St'NDEVALL, C. J.] Podiceps nigricollis. <Ci Ofvers. Kongl. Vetensk.-Akad. For- 

 handl. fw ur 1850, 185 1, pp. 291, 292. 



1852. Irby, L. H. Curious Death of a Dab-chick, or Little Grebe, (Podiceps minor). 



< Zoologist, X, 1852, p. 3711. 



1852. Newman, E. Occuirence of the Eared Grebe [Podiceps auritus] at Yarmouth. 

 <[ Zoologist, X, 1852, p. 3477. 



1854. Gloger, C. W. L. Der Schwanz der Steissfiisse [n. s. w.]. J. f. 0., ii, 1854, p. 

 480. 



An extract from Audubon's Ornith. Biogr.. lii, p. 598, on the structure of the tail of 

 Podiceps cristatus. 



18.^5. Davis, R. [On the breeding of Podiceps auritus in Ireland. ] <^ Xni. Hist. Eev., 



ii, 1855, p. 20. 

 1856. D'Urban, W. S. M. Occurrence of the Sclavonian Grebe (Podiceps cornutus) in 



Devonshire. <^ Zoologist, xiv, 1856, p. 5065. 



1856. Walker, A. O. Occurrence of the Eared Grebe [Podiceps auritus] in Flintshire. 



<^ Zoologist, xiv, 1856, p. 5321. 



1857. Clermont, Lord. On the occurrence of the Eared Grebe [Podiceps auritus, in 



Ireland]. < .V«<. JTist. Her. (Pr. Soc. ), iv, 1857, p. 72. 

 1857. Schlutei;, Vr. Schwarzc Eier von Podiceps cristatus. <^ J./. O., v, 1857, pp. 



302, 303. 

 1862. COUES, E. Synopsis of the North American Forms of the Colymbida" and Podi- 



cipidse. < Proc. Acad. Xat. Sri. Ph ila. , xi v, 1 862, pp. 226-233. 

 Abstract of a luouograph, j)ublished in 1874 in the author's ' Birds of the Northwest, ' q. v. 



The Grebes are considered as a family apart from Colymhidce, with two sabfamilies, Podu 



