LIST OV ENGRAVINGS. XXIX 



VOLUME II. 



Fig. Page 



239 Cyclosis, or partial circulation in the cells of the Cau 



linia fragilis, magnified, (Amici) 50 



240 The same in the jointed hair of the Tradescantia vir- 



ginica, (Slack) 50 



241 Section of the Hydra vividis, magnified, (Trembley) .. 74 



242 Hydra vividis seizing a worm, (id.) 76 



243 The same after swallowing a minnow, (id.) 76 



244 A Hydra which has swallowed another of its own 



species, (id.) 76 



245 Compound Hydra, with seven heads, (id.) 76 



246 Veretilla lutea, showing the communicating vessels of 



the Polypes, (Quoy et Gairaard) 83 



247 Nutrient vessels of the Tceyiia solium (Chiaje) 83 



248 Taenia globosa, or Hydatid of the Hog, (Goeze) 83 



249 Horizontal section of the Rhizostoma Cuvieri, Peron, 



(Eysenhardt) 88 



250 Geronia Hexaphylla, Peron, Medusa proboscidalis, 



(Forskal) 88 



25 1 Vascular net-work in margin of the disk of the Rhizos- 



toma Cuvieri, (Eysenhardt) 88 



252 Vertical Section of the Rhizostoma Cuvieri, (id.) .... 89 



253 Transverse .section of one of the arms of the same, (id.) 89 



254 Transverse section of the extremity of a tentaculum of 



the same, (id.) 89 



255 Leucophra patula, highly magnified, (Ehrenberg) ... 96 



256 Alimentary canal and cseca of the same, viewed sepa- 



rately, (id.) m 



257 Vertical section of the Actinia coriacea, (Spix) 99 



258 Digestive organs of the Asterias, (Tiedemann) 100 



259 Stomachs of the Nais vermicularis, (Rcesel) 102 



260 Stomachs of the Hirudo medicinalis, (original) 103 



261 Mouth of the same, showing the three semicircular 



teeth, (original) 103 



262 Tooth of the same, detached, (original) 103 



