Directions for placing the Plates in vol. IV. part I. 



The Vignette represents a diminished view of the Anguilla 

 Ophis described at p. 22. 



Plate 1 to face page 14 



2 23 



3 -i — 29 



4 34 



5 3a 



6 40 



7 68 



8 — 75 



9 — -~ — 80 



10 85 



11 86 



12 91 



13 92 



Plate 14 to face page 98 



15 10 o 



16 105 



17 — ' 106 



18 . 113 



19 • 114 



20 125 



21 — 126 



22 131 



23 150 



24 165 



25 184 



