Directions for placing the Plates in "vol. L 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 i to face page i Plate 36 to face page 104 



1 to face page 



2 



3 



4 



5 



6 



1 

 8 



9 

 jo 

 11 

 12 



13 



14 



J 5 

 16 



*7 



18 



19 



20 



21 

 22 

 23 

 24 



25 

 26 

 27 

 28 

 29 



3° 

 3* 

 32 

 33 

 34 

 35 



1 



7 



10 

 12 

 12 

 13 



16 



i7 



20 

 22 

 24 



*5 

 28 



30 

 34 

 38 

 40 

 43 

 44 

 54 

 5* 

 59 

 61 



*5 

 67 



73 

 81 

 92 

 93 



94 

 9 6 



99 

 103 



37 

 38 



39 

 40 



4i 



42 



43 



44 



45 

 46 



47 

 48 



49 

 5o 

 5 1 

 52 

 53 

 54 

 55 

 56 

 57 

 58 



59 

 60 



61 

 62 



63 

 64 



65 

 66 



67 

 68 

 68* 

 6 9 



106 

 116 

 120 

 123 



*39 

 140 



*43 

 144 

 148 

 156 



J 59 



162 



167 



169 

 170 



179 

 113 



l H 



180 



181 

 188 

 189 



*93 



198 



202 

 207 

 212 

 219 

 226 

 229 

 230 



2 34 

 237 

 244 



