1010 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 



1849. — W^arren, J. M. [On the glands which secrete the acrid fluid of Mephitis americana.] <^Proc. 



Bost. Soe. Nat. Hist, iii, 1849, pp. 175, 176. 

 Anon. Otters iu Hadley, Mass. <^Aiii. Journ. Sci. and Arts, vii, 1849, pp. 117, 118. 

 1850.— Kneeland, S. [On Mustela barbata, L.] < Proc. Bost. Soc. Nat. Hist, iii, 1850, pp. 238, 239. 



Middendorff, A. T. von. Ueber den gemeiueu Landbiiren, Ursus arctos, L. <^ Bull. Acad. 



Sci. St. Potersb. viii, 1850, col. 229,230. 

 Morton, S. G. [Ou the antiquity of some races of dogs.] <; Proc. Acad. Nat. Sci. Phila. v, 



IHoO, pp. 8,')-89. 

 Tovrnsend, J. K. On the giant wolf of North America (Lupus gigas). <[ Journ. Acad. Nat. Sci. 



Pliila. ii, 1850, art. viii, pp. 75-79. 



1850-51. — Middendorff, A. T. von. Untersuchungcn an Schiideln des gemeinen Landbiiren, als kri- 

 tische Beleucbtuug der Slreitfrage iiber die Arten fossiler Hohlenbiiren, <[Verhand. Min. 

 Gesell. St. Petersb. 1850-51, pp. 7-99. 



1851.— Berlandier, L. [On the species of Mexican wolves : with preliminary remarks by a committee of 

 the Academy of Natiiral Sciences of Philadelphia.] <]Proc. Acad. Nat. Sci. Phila. v, Feb. 1851, 

 pp. 156, 157. 



Brandt, J. F. Beobachlungen iiber die periodisch, vermuthlich in Folge climatischer Einfliisse 

 abweichende Bekleidung der Unterseite der Zehen und Fusssohlon der nordischen wieselar- 

 tigen Thiere. <Bull. Phys. Math. Acad. St. Petersb. ix, 1351, pp. 184-188; Melanges Biol, i, 

 ii, 1851, pp. 18,'.-190; Fror. Tagesber. no. 339 (Zool. Bd. ii), 1851, pp. 113-116. 



Brandt, J. F. Einige Bemerkungentlber die Variation derGaumenfalten mehrerer wieselartigen 

 Tbiere. < Bull. Phys. Math. Acad. St. Petersb. ix, 1851, pp. 188-190 ; Melanges Biol, i, ii, 

 1851, pp. 191-193; Fror. Tagesber. no. 317 (Zool. Bd; ii), 1851, pp. 381,382. 



Leidy, J. [On Macbairodus primasvus from the eocene of Nebraska.] <^ Proc. Acad. Nat. Sci. 

 Phila. v, 1851, pp. 3-29, 330. 



Morton, S. G. [Ou the races of dogs.] < Proc. Acad. Nat. Sci. Phila. v, 1851, pp. 139, 140. 

 1852.— Audubon, J. J., and Bachman, J. Description of a new American fox [Vulpes utah]. < Proc. 

 Acad. Nat. Sci. vi, ]8."j2, pp. 114, 115. 



De Kay, J. E. The tisher. Mustela canadensis. [Abstract from Zoology of New York. ] <[ Fifth 

 Ann. Rep. Reg. Univ. N. Y. 1852, pp. 33, 34, with pi. 



Leidy, J. [On Felis atrox, n. s.] < Proc. Am. Philos. Soc. Phila. v, 1852, pp. 261, 202. 



■Warren, J. C. [On the craniiira of Felis mylodon.] <Proc. Boston Soc. Nat. Hist, iv, 1852, 

 pp. 256-258. 



■Woodhouse, S. W. The North American jackal (Canis frustror). < Journ. Acad. Nat. Sci. 

 Phila. ii, 18.52, art. x, pp. 87, 88. 

 1853. — Giebel, C. G. Systematiscbe Bedcntung des Nasenbeins boi den carnivoren Raubthieren. 

 <[Zeit8chr. gesammt. Naturw. Halle, ii, 1853, pp. 35,36. 



Leidy, J. Description of an extinct species of American lion (Felis atrox). < Trans. Am. 

 Philos. Soc. Phila. n. s. x, 1853, art. xxii, pp. 319-321, pi. 34. 

 1854.— Leidy, J. [Remarks on the dentition of a new species of mammal from Nebraska, character- 

 ized under the name of Dinictis felina.] <[ Proc. Acad. Nat. Sci. Phila. vii, 1854, p. 127. 

 1855. — Brandt, J. F. BeitrUge zur uahcrn Kenntniss der Siiugethiere Eussland's. Erste Abhandlung. 

 Selbsliiudige Mittboilungen iiber den iius.sern Bau des Zobels (Mnstela zibellina var. asiatica 

 und americana) im Vergleich mit dem des Baum- und Steinmarders. (Mit vier Tafelu.) (Lu 

 le 27 juin 1851.) (Aus den M^moires [Acad. Si. Petersb.] Sci. Naturellcs, t. vii. besonders abge- 

 druckt.) 4°. 1855. pp. 2.3, pll. iv. 



Giebel, C. G. Hundcrassen der Hundearten. <[ Zeitschr. gesammt. Naturw. Halle, v, 1855, 

 pp. 349-363. 



Giebel, C. G. Ueber Fuchs- und Katzonscbildel aus Siidamerica. < Zeitschr. gciammt. Na- 

 turw. Halle, vi, 18.55, pp. 197-201. 



Parker, T. [On a peculiarity in the b.abits of the Now England be.ir.] < Proc. Boston Soc. 

 Nat. Hist, v, 18,55, p. 212. 



Pucheran, J. Notes mammalogiques [sur Ics carnassiers]. <[Rev. et Mag. Zool. vii, 1855, pp. 

 392-394. 



