XXIV LIST OF ENGRAVINGS. 



Fig. Page 



108 Shell of Achatina zebra, (De Blainville) 217 



109 Longitudinal section of ditto, (id.) 217 



110 Shell of Pterocerus scorpio, at an early stage of growth, 



(id.) 220 



111 Shell of the same when completely formed, (id.) 220 



1 12 Shell of Cyprcea exanthema at an early period of growth, 



(id.) 220 



1 13 Shell of the same animal, when completed, (id.) 220 



114 Transverse section of the shell of the Cyprcea exanthema, 



(Hunterian Museum) 221 



1 15 Shell of Conus 224 



116 Longitudinal section of the same, (original) 224 



117 Transverse section of the same, (Bruguiere) 224 



118 Inner surface of the Epiphragma of the Turbo, (De Blain- 



ville) 226 



1 19 Outer surface of the same, (id.) 226 



120 Clio borealls, (Cuvier) .231 



121 Sepia loligo, (De Blainville) 232 



122 Suckers of the same, (id.) 232 



123 Bone or internal shell of the same, (id.) 232 



123* Suckers of the Octopus, (original) 233 



124 Shell of Spirula australis, (De Blainville) 237 



125 Longitudinal section of the same, (id.) 237 



126 Shell of Nautilus pompllius, (id.) 237 



127 Longitudinal section of the same (id.) 237 



128 Pontobdella muricata, (Bruguiere) 243 



129 Nereis, (id) 243 



130 Erpobdella vulgaris (Lam.) Hirudo hyalina 243 



131 Diagram illustrating the rings and muscles of Annelida, 



(original) 243 



1 32 Gordius aquations 247 



133 Serpula ojjercularia 247 



134 Terebella conchilega, (De Blainville) 247 



135 Arenicola piscatoruni, or Lumbricus marinus 247 



136 Aranea diadema, (Rcesel) 253 



137 Divisions of the limb of a Crustaceous animal 258 



138 Mandible and palpus o^ My sis Fabricii, (Bruguiere) .... 258 



139 to 141 Feet-jaws belonging to the first, second, and third 



pairs, (id.) 258 



142 True foot belonging to the first pair, (id.) 258 



