90 



DISTRIBUTION OF ANIMALS. 



[part I. 



The two next orders consist of but a single family each, viz. : 



Order 



PROBOSCIDEA 

 HYRACOIDEA 



Fam. 



53. Elephantidse 



54. Hyracidse 



Elephants. 

 Bock-rabbits. 



We now come to the Eodentia, a very extensive and difficult 

 order, in which there is still much difference of opinion as to 

 the details of classification, although the main outlines are pretty 

 well settled. The foundations of a true classification of this 

 order were laid by Mr. G. E. Waterhouse more than thirty years 

 ago, and succeeding authors have done little more than follow 

 his arrangement with unimportant modifications. Professor 

 Lilljeborg, of Upsala, has however made a special study of this 

 group of animals, and has given an original and detailed classifi- 

 cation of all the genera. {Systematisk Ofversigt af de Gnagande 

 Daggdjuren, Glires. Upsala, 1866.) I follow this arrangement 

 with a few slight modifications suggested by other naturalists, 

 and which make it better adapted for the purposes of this work. 



Murina 

 (Waterhouse) 



Simplicidentatix 



Hystricina 

 (Waterhouse) 



Duplicidentati j ( wSZe) 



Order— RODENTIA. 



Fam. 



55. Muridag 



56. Spalacidae 



57. Dipodidse 



58. Myoxidse 



59. Saccomyidai ... 



60. Castoridse 



61. Sciuridre 

 , 62. Haploodontida? 



63. Chinchillidse ... 



64. Octodontidse .. 



65. Echimyidse 



66. Cercolabidse .., 



67. Hystricidse 



68. Caviidse 



( 69. Lagomyidse 

 \ 70. Leporidse 



Rats. 



Mole-rats. 



Jerboas. 



Dormice. 



Pouched Rats. 



Beavers. 



Squirrels. 



Sewellels. ' 



Chinchillas. 



Octodons. 



Spiny Rats. 



Tree Porcupines. 



Porcupines. 



Cavies. 



Pikas. 



Hares. 



The Edentata have been classified by Mr. Turner, in the 

 Proceedings of the Zoological Society (1851, p. 205), by Dr. 

 Gray in the British Museum Catalogue, and by Professor Cams 

 in his Handhuch. The former takes a middle course between 



