XXX LIST OF ENGRAVINGS. 



Fig. Page 



263 Glossopora tuberculata ; Hirudo complanata, Lin. 



(Johnson) 104 



264 The same seen from the under side, showing the diges- 



tive organs, (id.) 104 



265 Diagram showing the arrangement and connexions of 



the organs of the vital functions in Vertebrata, 

 (original) 106 



266 Spiral probosces of Papilio urticce, (Griffith) 114 



267 Trophi of Locusta viridissima, (Goldfuss) 122 



268 Filaments composing the rostrum, or proboscis, of the 



Cimex nigricornis, (Savigny) 125 



269 Sheath of the proboscis of the same insect, (id.) .... 125 



270 Toothed cartilage of the Helix pomatia, (Cuvier) 126 



271 Mechanism for projecting and retracting the tongue of 



the Woodpecker, (original) 132 



272 Laminge of Whalebone descending from the palate of 



the Balfsna mysticetus, (Bonnaterre) 137 



273 Teeth of the Delphinus phoccena (Cloquet) 142 



274 Skull of Tiger, (Cuvier) , 146 



275 Skull of Antelope, (Pander and D' Alton) 147 



276 Skull of Rat, (id.) 148 



277 Longitudinal section of simple tooth, (Rousseau) 151 



278 Surface of the grinding tooth of a Horse, (Home) 151 



279 Surface of the grinding tooth of a Sheep, (id.) 151 



280 Longitudinal section of the incisor tooth of the Rodentia 151 



281 Vertical section of the grinding tooth of the Elephant, 



(Home) 1 54 



282 Grinding tooth of the African Elephant, (id.) 154 



283 Grinding tooth of the Asiatic Elephant, (id.) 154 



284 Succession of teeth in the Crocodile, (Carus) 163 



285 Venomous fang of the Coluber naia, (Smith) 165 



286 Transverse section of the same, (id.) 165 



287 The same tooth at an earlier period of growth, (id.) . . 165 



288 The same, still less advanced in its growth, (id.) 165 



289 Base of the former, (id.) 165 



290 Base of the latter, (id.) 165 



291 Transverse section of the young fang, about its 



middle, (id.) 165 



