62 ABNORMAL CONDITIONS OF THE AXIS. 



The innominate bones are united in front, but are widely sepa- 

 rated behind ; there is no trace of a sacrum. The femora are arti- 

 culated with the pelvis by imperfect joints. The limbs are fairly 

 developed, but the outer toes have been arrested in their growth. 



Presented by Dr. Huggins, 1866. 



246. The intestine of the same. It is blind at either extremity, 



and forms a large much convoluted mass. 



Presented by Dr. Huggins. 



Subclass IV. Defective closure of the thoracic and abdominal 



cavities. 



This condition sometimes arises from simple arrest of develop- 

 ment ; the abdominal cavity, however, remains open more often 

 as a result of some other malformation, especially curvature of 

 the spine, the union of twins, or displacement of the abdominal 

 viscera. A portion of the diaphragm is occasionally wanting. 



a. Fissure of the sternum (ectopia of the heart). 



Slight fissure of the sternum may exist without displacement 

 of the heart j in the gravest forms there is complete ectopia of 

 that organ. 



247. The sternum of a Goose with deficiency of the median 



ossification. The carina is completely absent, its place 

 being occupied by a fissure. 



248. A foetal Pig with deficiency of the anterior thoracic and 



abdominal walls. The heart and peritoneal sac protrude 

 from the cleft. The anterior membranous investment 

 has been removed. Hunterian. 



b. Ectopia of the abdominal viscera. 

 Syn. Schistocomus, Grurlt. 



Cases of ectopia are most usually accompanied by other mal- 

 formations; hence several are arranged in other parts of the 

 Collection. See Nos. 262, 263, 283, 292. 



249. A female Human foetus at about the seventh month, with 



the greater part of the intestine protruding above the 

 umbilicus. The walls of the sac which contained this 

 intestine have been removed. 



Presented by W. Harris, Esq. 



