1010 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 



1849.— 'Warren, J. M. [On the glands which secrete the acrid Said of Mephitis americana.] <^Proc. 

 Boat Sue. Nat. Mist, iii, 1849, pp. 175,176. 

 . I mm. Otters iti Iladliy, Mass. <( Am. .Iciuni. Sci. and Arts, vii, 1841), pp. 117, 118. 

 1850-Kueeland, S. [On Mnstela barbata, L.] <Proc. Boat. Soc. Nat. Hist, iii, 1850, pp. 238,239. 



Middendorff, A. T. von. Uebor den gemeinen Landbaren, Ursus arctos, L. < Bull. Acad. 



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

 Morton, S. G. [On the antiquity of somo races of dogs.] < Proc. Acad. Nat. Sci. Phila. v, 



1H50, pp. 85-89. 

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

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



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

 tische Beleuchtung der Slreitfrage iiber die Arten fossiler Hohleubiireu. <^ Verhand. Min. 

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



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

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

 pp. 156, 157. 



Brandt, J. F. Beobachtungen iiber die periodisch, vermutblich in Folge climatischer Einfliisse 

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

 tigen Thiere. < Bull. Phys. Math. Acad. St. P6tersb. ix, 1851, pp. 184-188; Melanges Biol, i, 

 ii, 1851, pp. 185-190; Fror. Tagesber. no. 339 (Zool. Bd. ii), 1851, pp. 113-116. 



Brandt, J. F. Eiuigo Bemerkungen iiber die Variation der Gaamenfalten mehrerer wieselartigen 

 Thiere. < Bull. Phys. Math. Acad. St. P<5tersb. 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 Machnirodus primsevus from the eocene of Nebraska.] < Proc. Acad. Nat. Sci. 

 Phila. v, 1851, pp. 329,330. 



Morton, S. G. [On 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, 1852, pp. 114, 115. 



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

 Ann. Rep. Keg. 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, 262. 



Warren, J. C. [On the cranium 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, 1852, art. x, pp. 87,88. 

 1853. — Giebel, C. G. Systematische Bcdeutuug des Nasenbeius bci den carnivoren Raubthieren. 

 < Zeitschr. 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 Diuictis felina.] < Proc. Acad. Nat. Sci. Phila. vii, 1854, p. 127. 

 1855.— Brandt, J. F. Bcitiage zur uahern Kenntniss der Saugethiere Russland's. Erste Abhandlung. 

 Selbstiindige Mittheiluugen iiber den iiussern Bau des Zobels (Mustela zibellina var. asiatica 

 und americana) im Vergleich init dem des Banm- und Steinmarders. (Mit vier Tafeln.) (Lu 

 le 27 juin 1851.) (Aus den Memoires [Acad. St. Petersb.] Sci. Naturelles, t. vii. besonders abge- 

 druckt.) 4°. 1855. pp. 23, pll. iv. 



Giebel, C. G. Hutiderasseu der Huudearten. < Zeitschr. gesammt. Naturw. Halle, v, 1855, 

 pp. 349-363. 



Giebel, C. G. Ueber Foehs- nnd Katzensehiidel aus Siidamerica. < Zeitschr. gesammt. Na- 

 turw. Halle, vi, 1855, pp. 197-201. 



Parker, T. [On a peculiarity in the habits of the New England bear.] < Proc. Boston Soc. 

 Nat. Mist, v, 1855, p. 212. 



Pucheran, J. Notes mammalogiques [sur les camassieis]. <Eev. et Mag. Zool. vii, 1855, pp. 

 392-394. 



