BLUE BIRD. 



453 



the end, tapering to a slit point, and having the 

 edges lacerated. The oesophagus, ah c, is 2\ inches 

 long, its width at the upper part 4 twelfths ; 

 the proventriculus, be, large. The stomach, de, is of 

 moderate size, broadly elliptical, a little com- 

 pressed, 8 twelfths long, 7 twelfths broad ; its 

 muscles distinct, the lateral of considerable thick- 

 ness, the lower very thin, the tendons elliptical ; 

 the epithelium tough, dense, with longitudinal 

 rugae. The intestine, efg h % is rather short and 

 wide, its length being 1\ inches, its breadth in ^ 

 the duodenal portion 2| twelfths, contracting to 2 

 twelfths ; the rectum of the same width at first, 

 but enlarging into an oblong cloaca, i, 5 twelfths \^ 

 wide ; the coeca, h, 2 twelfths long, ^ twelfth broad, 

 cylindrical, 1 inch 1 twelfth distant from the ex- 

 tremity. Elongated salivary glands. 



The trachea is 1 inch 10 twelfths long, mode- 

 rately flattened, its rings 65, firm, with 2 addi- 

 tional half rings. There are four pairs of inferior 

 laryngeal muscles ; the bronchi of about 15 half 

 rings. 



YELLOW-POLL WARBLER. Sylvia JEstiva. 



PLATE XCV. Vol. I. p. 476. Adult. 



CHILDREN'S WARBLER. Sylvia Childrenii. 



PLATE XXXV. Vol. I. p. 180. Young. 



The birds represented in my thirty-fifth plate, and dedicated to 

 Mr Children, I have found to be the young of Si/Ma cestiva, probably 

 of a late brood of the previous year, they having been found breeding 

 at a period when this species shews few or none of the reddish spots on 

 the breast, the want of which induced me to consider them as of a 

 distinct species. These circumstances I mentioned to the Prince of 



