Directions for plac'mg the Plates in ml. I. part I, 



The Vignette to part I. represents the Platypus or Duck-bill in 

 different views. — Plate containing the outline of the Skull to 

 front p. vii of the Introduction. 

 Plate 



1 to face page 



2 . . 



3 

 4 



s 



6 



7 

 8 



9 



10 



ii 



12 



13 

 H 

 *5 

 16 



17 



18 



19 



20 



21 



22 



23 



*4 



H 

 26 



27 

 28 

 29 



30 

 3 1 

 32 

 33 

 34 

 35 



1 



5 

 1 



10 

 12 

 12 

 13 



16 



17 



20 

 22 

 24 



25 

 28 



30 

 34 

 38 



40 



43 

 44 

 54 



59 

 61 



65 

 67 

 73 

 81 

 92 

 93 

 94 

 96 



99 

 103 



Plate 36 to face page 104 



106 



116 



37 

 38 



39 

 40 



41 



42 , 



43 



44 



45 

 46 



47 

 48 

 49 

 50 

 5 1 

 52 

 S3 

 54 

 55 

 56 

 57 

 58 



59 

 60 



61 



62 • 



63 ■ 



64 ■ 



65 ■ 

 66 

 67 

 68 

 68* 



69 



120 

 123 



139 

 140 



143 

 144 

 148 

 156 



*59 

 162 



167 

 169 

 170 

 179 

 173 



*75 

 180 



181 



188 



189 



193 

 198 



202 

 207 

 212 

 219 



226 

 229 

 230 



234 

 237 



244 



