578 



WILSON'S PLOVER. 



1 inch 4 twelfths ; the proventriculus, b c, 

 4 twelfths in breadth, its glandules form- 

 ing a belt 6 twelfths in breadth. The sto- 

 mach, cde, is rather large, roundish, com- 

 pressed, 9 twelfths in length, 10 twelfths 

 in breadth ; the lateral muscles 5 twelfths 

 in thickness ; the epithelium remarkably 

 dense, thick, with two broad granulated 

 ridges on each side forming grindiag sur- 

 faces. The intestine, efgh, is rather short, 

 and wider than in the other species ; its 

 length 9|- inches, its width at the upper 

 part 4 twelfths, diminishing to 2 twelfths. 

 Coeca 1 inch 4 twelfths long, cylindrical, 1 

 twelfth in width ; their distance from the 

 extremity 1^ inch. Trachea 2^ inches 

 long, flattened, from 2 twelfths to 1 

 twelfth in breadth; its rings about 90, 

 cartilaginous. Bronchial half rings about 

 15. Lateral and sterno-tracheal muscles 

 strong ; a single pair of inferior laryngeal 

 muscles. Adult male. 



PIPING PLOVER. 



Charadrius melodus, Ord. 



PLATE CCXX. Vol. III. p. 155. 



In this species the upper mandible is more concave than in any of 

 the preceding ; but the structiu-e of the mouth is similar. Its width 

 is 4c\ twelfths. The tongue is 5 twelfths long, deeply concave above, 

 fleshy, the tip rounded, thin-edged, and horny. The oesophagus is 

 2^ inches long, 2 twelfths in width, its inner coat longitudinally plicate, 

 as in all the other species. Proventriculus 3 twelfths in breadth, its 

 belt of glandules 5 twelfths. The stomach rather small, elliptical, 

 7^ twelfths long, 6 twelfths in breadth ; the lateral muscles large, the 



