THE NODDY TERN. 
285 
extent of wings 32 ; wing from flexure 10}f ; tail 53 ; bill along the back 
13, along the edge of lower mandible 2\ ; tarsus if ; middle toe 1J, its claw 
xi. Weight 43 oz. 
Width of mouth 9 twelths. Tongue 1 inch 3 twelfths long, very slender 
tapering to a horny point, grooved above, emarginate and papillate at the 
base. (Esophagus 4 inches 4 twelfths long, its width along the neck 8 
twelfths, within the thorax dilated as in the last species, its breadth 1 inch 
1 twelfth : the proventricular belt 4 twelfths broad. Stomach very small, 
10 twelfths long, 8 twelfths in breadth, of the same structure as in the last. 
Lobes of liver 1 inch 2 twelfths and 11 twelfths ; gall-bladder oblong, 6 
twelfths in length, 3* twelfths in breadth. Intestine 13 inches long, 2 I 
twelfths wide at the commencement, II twelfths toward the rectum ; coeca 
2i twelfths long, twelfth wide, II inches from the extremity ; cloaca ovate, 
7 twelfths in width. Trachea 3 inches long, from 23 twelfths to 1| twelfths 
in breadth, roundish ; the rings 110, very feeble. Bronchi very wide, one 
with 26, the other with 24 half rings. 
END OF SEVENTH VOLUME. 
