CONTENTS. XXVI 



No. of 

 Preparations. 



B. Prosencephalic arrest. 



a. Khinocephalus 160178 



b. Arhynchus 179186 



c. Anopia 187189 



C. Mesencephalic arrest 190 19 1 



D. Epencephalic arrest. 



a. Agnathia 192 193 



b. Synotia 194 199 



E. Prostho-epencephalic arrest. 



a. Cyclocephalus 200209 



b. Nanocephalus 210222 



c. Acephalus 223 227 



Subclass IT. Posterior axial arrest. 



a. Sympodia 228233 



b. Monopodia 234237 



Subclass III. Arrest of the tvhole axis 238 246 



Subclass IV. Defective closure of the thoracic and 



abdominal cavities. 



a. Fissure of the sternum 247 248 



b. Ectopia of the abdominal viscera .... 249 251 



c. Deficiency of the diaphragm 252 255 



CLASS VI. MALFORMATIONS OF THE AXIS FROM 



DISEASE. 

 Subclass I. Curvature of the axis. 



a. Simple curvature , . . . 256 261 



b. With ectopia of the viscera 262 264 



Subclass II. Dropsy of the axial canal of the cere- 



bro -spinal system. 



a. Spina bifida 265277 



b. Occipital deficiency 278 279 



c. Epicephalocele 280281 



Subclass III. Anencephalus 282292 



SERIES III. ABNORMAL CONDITIONS OF THE 

 LIMBS. 



I. IN INVERTEBRATES 293 



II. IN VERTEBRATES. 

 CLASS I. VARIATION. 



A. In the number of digits. 



a. Polydactylus 294313 



CLASS II. DUPLICITY. (See Polydactylus.) 



