440 SMITHSONIAN MISCELLANEOUS COLLECTIONS [vOL. 45 



Caprolagiis is found along the foothills of the Himalayas in north- 

 eastern India. 



A^csolagiis is found only in Sumatra. 



Roincrolagus is known only from Mount Popocatepetl, Mexico. 



Pcntalagiis is known only from the Liu Kiu islands, south of 

 Japan. 



The family Ochotonidse has a much less extensive distribution than 

 the Leporidse. Members of it are found in the Canadian zone of 

 the Rocky mountains of western North America. They also occur 

 in the mountain ranges of eastern Europe, central Asia, and in 

 Siberia. They are thus confined to the Holarctic region of the 

 Arctogseic realm. 



IX. BIBLIOGRAPHY 



The following bibliography gives the titles of the works which are 

 referred to in, and have been of most service in the preparation of, 

 the present paper, with the exception of those that are mentioned in 

 the tables of synonomy, or incidentally in the text, where full refer- 

 ences are given. 



Baird, S. F., '57. 



Mammals of North America, 1857, pp. 572-620, pis. lvi-lix. 



The following groups of the genus Lepus are recognized, designated by 

 letters : A, corresponds to the genus Lepus exclusive of the subgenus 

 Macrotolagus; B, corresponding to the subgenus Macrotolagiis; C, to the 

 genus Oryctolagus; D, to the subgenus Sylvilagiis; E, to the subgenus 

 Microlagus, and F, to the genus Litnnolagus. 



Excellent figures of skulls of Lepus, Sylz'ilagus, Macrotolagus and 

 Limnolagus are given. 



Blyth, Edward, '45. 



Description of Caprolagiis, a new genus of Leporine Mammalia. 

 Journal of Asiatic Society of Bengal, xiv, 1845, PP- 247-249. 



Caprolagiis proposed as a genus to include Lepus hispidus Pearson. 



Figures of the skull, dorsal, ventral and lateral views are given. 



Biichner, Eug., '94. 



Wissenschaftliche Resultate der von N. AI. Przewalski nach Central- 

 Asien Reisen Zool. Theil, Band I., Saugethiere. St. Petersburg, 1894. 



Contains excellent photographic reproductions of the skulls of Ocho- 

 toua (Ocliotona) ladacensis, Ochotona (Ochotona) koslozvi, Ochotona 

 (Conothoa) erythrotis. Ochotona (Pika) daurica, Lepus oistolus, and 

 Lepus pallipes, on plates xxiv and xxv. 



Flower, William Henry, and Lydekker, Richard, '91. 



Mammals, living and extinct, London, 1891, pp. 491-495. 



Brief descriptions of the two families of the Duplicidentata, Lagomyidse, 

 and Leporidae, each with a single existing genus, Lagomys and Lepus, are 

 given. 



