NIGHT HERON. 



603 



breadth. The duodenum, efg, curves at the distance of 3 inches, and pro- 

 ceeds toward the liver. The 

 intestine, ^ A ^;, is then singu- 

 larly convoluted, forming 24 

 folds, and is 4 feet 5 inches in 

 length ; its width at the up- 

 per part 2| twelfths, gradu- 

 ally contracting to 1 twelfth ; 

 the rectum 5 inches long, 

 its average width 4 twelfths ; 

 the cloaca globular, 1 inch 

 9 twelfths in diameter ; there 

 is a single ccecum 2| twelfths 

 long and 1 twelfth wide. 



Trachea 8j inches long, 

 4 twelfths wide at the com- 

 mencement, 3^ twelfths in 

 the greater part of its length, 

 at its lower part 2^ twelfths. 

 The rings are firm, 135 

 with 4 dimidiate rings. Both 

 bronchi have 25 rings. The 

 muscles as in the preceding 

 species, but the inferior la- 

 ryngeal muscles extremely 

 slender, and inserted upon 

 the last tracheal and first 

 bronchial half ring. 



