596 BULLETIN UNITED STATES GEOLOGICAL SURVEY. {Yol.Y. 



1851. Straxgkwayes, R. The Red-backed Shrike, (Lauius C'oUurid). <^Zoulofjht, 



ix, 1H5I, p. 3207. 



1852. Buxton, T. F., Jr. Occ-urreuce of the Great A8h-cok)ured Shrike [Lauius excu- 



bitor] iu Norfolk. <C^ Zoologist, x, 1852, p. 3475. 



1852. Ellman, J. B. Occurreuce of the Great Gray Shrike [Lauius excubitor] at 

 Hailsham. < Zoologist, x, 1852, p. 3388. 



1852. ViEKTHALER, R. [Lauius kiek. ] < XaM»irt««irt, Bd. ii. Heft ii, 1852, p. 57. 



1853. Bonaparte, C. L. Mouographie des Lauieus. <i?ei\ et Mag. de Zool, v, 1853, 



pp. 292-295, 432-441. 



La aynonymic, la patrio et les caracteres de 42 especes des Lanieus, traitees d'aprts la ina- 

 nifere de .son Conspectus. Lanius cephalomeltis, p. 436 ; L. schioaneri, p. 437 ; Enneoctonu^nilo- 

 tieus, p. 439; Sigmodus riijiventris, p. 441. 



1853. GuRNEY, J. H. Note on the Red-backed Shrike [Lauius rufus] destroyiug Small 



Birds. < Zoologist, xi, 1853, pp. 3981, 3982. 

 18.53. Tobias, R. [Ueber Nester und Eier von Lanius rufus.] <^Naumannia, iii, 

 1853, pp. 335, 336. 



1854. Brehm, C L. Der grosse Wiirger (Lauius excubitor Liu. ) und eiuige seiner Ver- 



wandten. <-/./. O., ii, 1854, i)p. 143-148. 



Characters of i. rapaxTix\n\\, L. excubitor, L. ludoviciantts, L. mexicanus'Brhm., n. sp., p. 

 145; L. assimilis A. &.E. Brluii.. L. leuconotus A. &, E. Brhin. 



1854. Partridge, H. T. Carnivorous Propensity of the Great Gray Shiikc [Lanius 

 excubitor]. <^ Zoologist, xii, 1854, p. 4251. 



1856. DiEZEL, C. E. Kanipf eiues Dorudrehers [Lanius spinitorquus] mit einer Ei- 



dechse. < J. f. 0., iv, 1856, pp. 84, 85. 

 Xacbschrift von Dr. Gloger. 



1857. Cassin, J. Notes on the North American species of Archibuteo and Lanius, and 



description of a new species of Toucan, of the genus Selenidera, Gould. <[ Proc. 

 Acad. Nat. Sci., Phila., ix, 18.57, pp. 211-214. 



In 80 far as Lanius is concerned, this jiaper gives a monographic sketch of the (too many) 

 species recognized as Korth American by the author, these being no fewer than seven in 

 number. Later authors have not succeeded in establishing more than two of these as valid. 



1857. Crisp, E. [On a nest found iu Sutiblk, supposed to be that of Lauius excubitor. ] 



<P. Z. S., XXV, 1857, p]). 219,220. 

 1857. Hadfield, H. W. Note on the Woodchat Shrike (Lanius rufus). <^Zoologist, 



XV, 1857, p. 5685. 

 18.57. [Whately, R.] The Song of the Butcher-bird [Lauius collurio]. <^ Nat. Hist. 



Fev., iv, 1857, pp. 57,58. 



1857. Wilson, J. J. Occurrence of the Great Graj' Shrike [Lanius excubitor] near 



Leeds. <^ Zoologist, xv, 1857, pp. 5362, 5363. 



1858. Farren, W., Jr. The Great Gray Shrike (Lanius excubitor) iu Cambridgeshire. 



< Zoologist, xvi, 1858, p. 5958. 



1858. HoMEYER, A. V. Ueber die verschiedene Fiirbung der Eier des Lanius collurio. 

 Liu. < J./. O., vi, 1858, pp. 323,324. 



1858. Passler, W. Ueber die verschiedene Fiirbung der Eier des Lauius collurio. 



< J./. 0., vi, 1858, pp. 43-46. 



1859. Edward, T. Occurrence of the Great Ash-coloured Shrike (Lanius excubitor) in 



Banttshire. < Zoologist, xvii, 1859, pp. 6491, 6492. 

 1«.59. Hawker, W. H. [Letter on supposed nest and eggs of Lanivis excubitor.] 

 <//>(s, i, 1859, pp. 330,331. 



1860. Edward, T. Occurreuce of the Great Aslicoloured Shrike (Lanius excubitor) in 



Aberdeenshire. < Zoologist, xviii, 1860, pp. 6807, 6808. 

 1860. Edward, T. Capture of an Aslicoloured Shrike (Lauius Excubitor) at Sea. 

 <^Zoologist, xviii, 1860, p. 7235. 



