l^on] the- hares and their allies 441 



Gray, J. E., '67. 



Notes on the skulls of Hares (Leporidae) and Picas (Lagomyidre) in the 

 British Museum. Annals and Magazine of Natural History, 3d series, 

 vol. XX, 1867, pp. 219-225. 



Lagomyidae divided into two genera: Ogotoma and Lagoniys. 



Leporidae divided into the following genera : Hydrolagiis. Sy'vilagus^ 

 En'.agus, Lepus, Tapcti, Cuniculus, Carpolagus. 



Krause, W., '84. 



Die Anatomie des Kaninchens in topographischer und operativer Riick- 

 sicht, Zweite Auflage, 1884, pp. 1-383. 



It contains a complete anatomy of the common rabbit Oryctolagus 

 cuniculus; pp. 36-46, general osteology; pp. 75 to 135, a detailed description 

 of all the bones of the rabbit, illustrated by woodcuts, figs. 28 to 64; pp. 

 197-199, embracing figs. 80-82, devoted to the teeth. In the introduction, 

 PP- i~35. many of the differences between the hares Lepus and the 

 rabbits Oryctolagus are pointed out, figs. 3-13. The skulls and bones of 

 the forearm of each are figured. 



Lilljeborg, '74. 



Sveriges och Norges Ryggradsdjur, i, 1874. 



Describes Lepus with two subgenera, true Lepus represented by fiuiidus, 

 Oryctolagus (new name to replace Gray's Cuniculus) for Lepus cuniculus. 

 The cranial characters of the two subgenera are carefully set forth. 



Lydekker, Richard, '96. 



A geographical History of ]\Iammals, 1896. 



A work of 400 pages with a map of the mammalian geographical realms 

 and regions in the front. 



Major, C. I. Forsyth, '99. 



On Fossil and Recent Lagomorpha. Transactions of the Linnean Society 

 of London, 2d ser., vii, Zoology, November, 1899, pp. 433"530, plates 36-39. 

 An' elaborate account of recent and fossil forms, with excellent figures,, 

 especially of the teeth. The characters for the groups are not well defined 

 and are rather obscured in the mass of general discussion. 



Mearns, Edgar A., '96. 



Preliminary description of a new subgenus and six new species and sub- 

 species of hares from the Mexican border of the United States. Proc. 

 U. S. Nat. Museum, xviii, pp. 551^565. J"ne 24, 1896. 



Macrotolagus described as a new subgenus of Lepus. Diagnoses of 

 hlydrolagus, Sylvilagus, and Macrotolagus given. 



Merriam, C. Hart, '96. 



Romerolagus nelsoni. a new genus and species of rabbit from Mt. Popo- 

 catepetl, Mexico. Proc. Biol. Soc. Washington, x, pp. 169-174, December 

 29, 1896. 



The genus Romerolagus is described. Its sternum is figured. 



Merriam, C. Hart, '98. 



Life and Crop Zones of the United States. Bull. No. 10, U. S. Dept. 

 Agric, Div. of Biol. Survey, 1898, pp. 1-79. 



Map of the life zones of the United States in front. 



