ILLUSTRATIONS. 



Plate I. 



Fig. 1. Cross section of oesophagus of Hydrocorax hydrocorax. 



2. Longitudinal section of proventriculus of Bydroccyrax hydrocorax: A, 

 Mucous membrane; B, muscularis mucosae; C, specialized glands; D, 

 muscular coats. 



Plate II. 



Fig. 3. Section of stomach of Hydrocorax hydrocorax: A, Deciduous membrane; 

 B, mucosa; C, muscular coats; D, peritoneum. 

 4. Cross section of intestine of Hydrocorax hydrocorax: A, Peritoneum; B, 

 longitudinal layer of muscle; C. circular layer of muscle; D, muscularis 

 mucosae beneath the mucosa. 



TEXT FIGURE. 



Fig. 1. Stomach of Hydrocorax hydrocorax showing: A, deciduous membrane 

 almost ready to be cast off (note its separation) ; B, stomach before 

 the preparatory separation has taken place. 



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