MIGRATORY THRUSH. 445 



egg last laid to be only about a third of the size of the others. Albi- 

 noes of this species have sometimes been seen." 



The interior of the mouth has the same general structure as that 

 of the Mocking Bird ; its width 4 twelfths. The tongue is 8 twelfths 

 long, narrow, tapering, thin, horny, with the margins slightly lacerated, 

 and the tip slit. The posterior aperture of the nares is oblongo-linear, 

 7 twelfths long. The oesophagus is three inches long, funnel-shaped 

 at the commencement, afterwards of the nearly uniform width of 3^ 

 twelfths, until it enters the thorax, when it contracts ; the proventri- 

 culus bulbiform, 5 twelfths in breadth. The stomach is of moderate 

 size, broadly elliptical, 9 twelfths in length, 7^ twelfths in breadth ; 

 the epithelium light red, longitudinally rugous ; the muscles of mode- 

 rate thickness. The intestine is of moderate length and great width, 

 the former being 13 inches, the latter 4 twelfths. It passes downwards 

 in front, at the distance of 1| inch, bends forward, inclosing the pan- 

 creas, opposite the right lobe of the liver receives the biliary ducts, 

 then passes backwards to the right side until it reaches the hind part 

 of the abdomen, forms two short convolutions, afterwards a larger one, 

 and over the stomach terminates in the rectum. The coeca are 3 twelfths 

 long, 1 twelfth in width ; their distance from the extremity 1 inch. 

 The cloaca is an oblong sac, of which the width is ^ inch. 



The trachea is 2 inches 2 twelfths long, a little flattened, firm, the 

 rings about 78, with 2 terminal half rings. The bronchi are short, of 

 about 12 half rings. The muscles are as described in the Mocking 

 Bird. 



HERMIT THRUSH. 



TURDUS MINOB, GmEL. 

 PLATE LVIII. Vol. I. p. 303. 



The mouth of this species has the same struetiu-e as that of the 

 Robin. The tongue is 5 twelfths long, sagittate and papillate at the 

 base, narrow, thin, horny, with the margins slightly lacerate and the 

 tip slit. The oesophagus is 2^ inches long, about 2 twelfths in width. 



