( vii ) 



LIST OF ILLUSTRATIONS. 



Page 

 Skull, Teeth, and Paws of Aplo- 



dontia 7 



Malabar Squirrel 13 



Teeth of Tamias 14 



Teeth of Sciurns 15 



Rocky-Mountain Flving Squir- 

 rel ....'.... 16 

 Parry's Spermophile . . . .19 



Alpine Marmot 21 



Ditto 22 



Bobac 23 



Quebec Marmot 24 



Teeth of Dormouse .... 26 

 Common Dormouse .... 27 



Ditto 28 



Lerot, or Gnnlen Dormouse . 29 



Cape Graphinre 31 



Skull and Teeth of Dipus 



hirtipes 32 



Skull and Teeth of Alactaga . 34 



Egyptian Jerboa 35 



Ditto 36 



Ditto 37 



Dark-banded Jerboa . . . .39 

 Teeth of Labrador Jumping 



Mouse 40 



Labrador JumDing Mouse . .41 

 Teeth of (,'ape Leaping Hare . 42 

 Cape Leaping Hare .... 43 

 Skull and Teeth of Burton's 



Gerbille 45 



Burton's Gerbille ... .46 

 Mitchell's Gerboa .... 18 

 Teeth of Common Mouse . . 50 



Common Mouse 53 



Ditto 54 



I'age 



Barbary Mouse 56 



Darwin's Mouse 59 



Long-tailed Field Mouse . .- 62 

 Short-tailed Field Mice ... 65 



Harvest Mouse <=~ 



Ditto . .~ rs 



Teeth of Plamster .... 70 



Hamster 71 



Teeth of Caffre Broad-eared Rat 73 

 Caffre Broad-eared Rat ... 74 

 Teeth of Hydromys ... .75 



Hydromys 76 



Teeth of Economist Mouse . 78 



Economist Mice 79 



Water-Rat 81 



Beaver H5 



Teeth of Musquash . . . .87 

 Musquash ... . . . . >-8 



Mole-Rat go 



Skull and Teeth of Canada Sand- 



Kat 92 



Teeth of Canada S?nd-Rat . . 93 



Canada Sand-Rat 94 



Ditto 95 



Camas poucbed Rat .... 96 

 Teeth of Coast Rat . . . .97 



Coast Rat 98 



Rabbit C( rcomys 99 



Teeth of Echymys . . . .100 

 Skull of Cuming's Octodon . .101 

 Cuming's Octodon .... 102 



Tucutuco 103 



Skull of Tucutuco . . . .104 

 Muzzle and Paws of Utia . .106 

 Utia 107 



