524 BLACK-BILLED WARBLER. 



Scotia and Newfoundland, and we saw a few in Labrador, amid the 

 clumps of low trees a few miles from the shore of the Gulf in secluded 

 and pleasant valleys. It does not appear that it reaches the Fur Coun- 

 tries, or the Rocky Mountains, as no mention is made of it by Dr Rich- 

 ardson, or Dr TowNSEND. 



A male preserved in spirits measures to end of tail 12 inches, to 

 end of wings 8i, to end of claws 8 ; extent of wings 15^ ; wing from 

 flexure 5^ ; tail 5j. 



The interior of the mouth presents the same appearances as that 

 of the other species, its width 7 twelfths ; the tongue 8 twelfths long, 

 of the same form, but black, as is the whole of the mouth. The oeso- 

 phagus is 6 twelfths in width at the commencement, and gradually 

 contracts to 3 twelfths ; but the proventriculus is 6 twelfths in breadth ; 

 its glands smaller than in the other species, and forming a belt ^ inch 

 in breadth. The stomach is similar to that of the Yellow-billed 

 Cuckoo ; its tendons about 4 twelfths in length, and 3 twelfths in 

 breadth ; the inner surface soft, with faint longitudinal rugae, although 

 quite smooth. Pylo'rus small, with a semilunar margin. The lobes 

 of the liver are very unequal, the left 5 twelfths, the right 10 twelfths 

 in length. The contents of the stomach are remains of insects, with 

 a few short hairs scattered here and there over its internal surface. 

 The intestine is 11 j inches long, very slender, its width from 2| twelfths 

 to 1^ twelfth ; the cloaca oblong, 5 twelfths in width ; the coeca. Fig. 2. 

 p. 522, 1 inch 1 twelfth long, their greatest width about the middle 

 24 twelfths, narrowed toward the extremity. The trachea is 2 inches 

 2 twelfths long, moderately flattened, from 1^ twelfth to 1 twelfth 

 in breadth ; its rings 58, with 5 additional dimidiate rings. Bronchi 

 of about 10 half rings. The muscles as in the other species. 



