942 BULLETIN UNITED STATES GEOLOGICAL SURVEY. [rol.Y. 



1??38. Bartlett, a. D. Plumage of the Suiew [Mergcllos iilbellus]. <^ Charlcsw. 

 May. Xat. Hist., ii, 18:38, p. 398. 



1838. Blainville, [M. H. D.] de. Remarques de M. de Blaiuville jt I'occasiou de 

 la lettre prdc6deute [par M. Baillon, sur le cygne de Bewick (Cygnus be- 

 wickii)]. < Comjjt. Rvml. dc VAcad. Sci. Paris, vii, 1838, p. 102-2-1026. 



1838. Blainville, [M. H. D.] de. [Sur quelques points iutdressans de I'histoire des 

 Cygnes. ] <^ Ecvue Zuologique, i, 1838, pp. 307, 308. 



1838. Blyth, E. Adultplumageof the female Smew [Mergellusalbellus]. <C_Charles7v. 



Marj. Xat. Hist.,\\, 1838, pp. 3%, 30G. 

 1838. Blyth, E. Plumage of the Smew Merganser [Mergellus albelhis]. <[ Charlesw. 



Mag. Xat. Hist., ii, 1838, p. 4,51. 



1838. Eytox, T. C. a Monograph of the Auatidte or Duck-tribe, . , . Loudon. 



Lougmauu & Co. 1838. 4to. ])11. 24, many cuts. 

 Not seen. 

 1838. Lesson, R. P. Descrii)tiou faite sur la nature du Grand Harle ou du Merganser 



[Mergus merganser]. <^ licvue Zoolo(ji(/uc,\, 1838, pp. 8-10. 



1838. Naumann, J. F. Zwei Arten Singschwiine in Deutschland. < Arch. f. Xaturg., 



1838, (1), pp. 3G1-371, Taf. viii, ix. 



Xebst Zusatzen vom Herausg., pp. 507-371. Cygnus niusiiiiis, pi. viii, tigg. a-d; C. isiandi- 

 CHS, pi. viii, flgg. 2 e-h ; C itwicHi, pi. ix. 



18.38. Yarrell, W. [On a New Species of Swan (Cygnus immntabilis).] < P. Z. S., 

 Ti, 1838, p. 19. 



1838. Yarrell, W. Beschreibungdes Stimmorgans eines [kurzUch] neuenSchwans, 



Cygnus buccinator Richardson. <^ Oken^s Isis, Bd. xxxi, 1838, p. 404. 

 Aus (1. Linn. Trans., xvii, pt. iv, 1837, pp. 1-4. 



1839. Baillon,—. [Ueber Cygnus bewickii.] <Ofce«'.s /sis, Bd. xxxii, 1839, pp. 394, 



395. 



L'Institut, Kr. 260, p. 420. 



1839. Bartlett, A. D. On a new British species of the genus Auser [phcenicopus], 

 with remarks on the nearly-allied species. <[ P. Z. S., vii, 1839, pp. 2-4. 

 Treating of A. segetum, A. cineretis, A. albifrons, A. phoenicopxcs, sp. n., p. 8. 



1839. Blainville, [M. H. D.] de. [Ueber die Arten der Si])pe Cygnus.] <^Oken's 

 Isis, Bd. xxxii, 1839, p. 395. 

 L'Institut, Nr. 260. 



1839. Les.son, R. P. Note sur le genre Cygne. < ^erHf Zoo/of/if/ffe, ii, 1839, pp. 321-324. 

 Synopsis de 8 especes. 



1839. Pelerin, W. G. On the Structural differences observable in the Crania of the 

 four Briti.sh Species of the Genus Cygnus. <::^ Charlesiv. Mag. Xat. Hist., iii, 



1839, pp. 178-180, fig. 29. 



1839. Proctor, W. Claugula barrovii [islandica], a Native of Iceland. <^Ain).Xat. 



Hist., iv, 1839, pp. 140, 141. 

 1839, Reinhardt, .J. Om den islandske Svane [Cygnus islandicus]. < Kr^'-.t/er's 



Xaturhist. Tidslc, ii, 1839, pp. 527-532. 

 1839. RCppell, E. Ornithologische Miscellen. . . . <^Mus. SencJccnb., iii. Heft i, 



1839, pp. 1-44. 

 Mir nicht znganglich. Monographieen der Gattung Ci/gnus, u. s. w. 



1839. RuPPELL, [E.] Allgemeinc Bemerkuugeu fiber die Gattungen der Schw^ue und 



eine best)udere Beschreibuug vou Anas gambeusis. <^ Okcu's Inis, Bd. xxxii, 

 1839, p. 713. 

 Auszug aus Afiig. Senkenb., iii, Heft i, 1839, p. 1. 



1840. Derby, Earl oj. [Note on certain hybrid Anatidie. ] < P. Z. S., viii, 1840, p. 33. 



