404 



FCETAL DYSTOKIA. 



The Symelian Motisirosities {ao-j^ with, >j.ikoq^ limb) are those which Guilt 

 includes in his first Class and Order, there being an absence of parts, 

 with fusion of others (Fig. 87). 



The Celosomian Monstrosities {yjjlr^, hernia, aw'ta^ l^ody), more frequent 

 perhaps than any others, are those which Gurlt places in his third Order 



Ectopia Cordis '. Schistocormus fissisiernalis 



— Schistocormus, and are chiefly characterized by the absence, more or 

 less complete, of the abdominal parietes, and the abrupt curvature of the 

 sjDine backwards, downwards, or to one side ; so that the pelvis and pos- 

 terior limbs are directed forwards, to one side, or over the back, while the 



Fig. 90. 

 Pseiidencephciliaii Monstrosity ; Perocephalus pseudocephalus, Gurlt. 



abdominal cavity bemg open, allows its viscera to float about unprotected. 

 There are many degrees of this deformity. Sometimes the abdominal 

 cavity is open, the thorax being undeformed and closed in posteriorly by 

 the diaphragm, and the ribs attached to the sternum (Schistocormus fssi- 

 ventralis, Gurlt, Fig. 88). Sometimes the posterior end of the spine is 

 curved forward to the middle of the back {Schistocormus reflexus^ Gurlt) ; 

 the ribs follow in the same direction, but instead of bending: downwards 



