432 PARUS CCERULEUS. 



bed, is an inch and a half long, its greatest diameter nearly a 

 twelfth and a half; the stomach, Fig. 10, irregularly elliptical, 

 compressed, scarcely six twelfths long ; the intestine, fg h ij, 

 five inches and a quarter, the diameter of its duodenal portion 

 a twelfth and a half, the coeca, Fig. 11, one twelfth long, and 

 three fourths of an inch from the extremity ; the rectum two 

 twelfths in width, and enlarging to three twelfths. 



The eyes are of moderate size, the eyelids feathered. The 

 aperture of the ear large. The tongue short, emarginate and 

 papillate at the base, flat, horny, and thin-edged towards the 

 tip, which is abrupt, and terminated by four bristles. The 

 feet are rather short and strong ; the tarsus with seven anterior 

 scutella; the toes strong, the first much stouter, the three an- 

 terior united as far as the second joint, the two lateral nearly 

 equal, the first with six, the second with eight, the third 

 twelve, the fourth ten scutella. The claws arched, much com- 

 pressed, deep, laterally grooved, acute. 



The plumage is soft, blended, and tufty, especially that of 

 the back. The wings are of moderate length, rounded, of nine- 

 teen quills, which are decurved ; the primaries rounded, the 

 first less than half the length of the second, the fourth and 

 fifth equal and longest, the third and sixth equal and slightly 

 shorter, the second as long as the eighth. The tail is rather 

 long, narrow, a little decurved, and slightly emarginate, of twelve 

 narrow, weak feathers, which are rounded and acuminate. 



The bill is dusky, its edges horn-colour. The iris brown. 

 The feet greyish-blue, the claws brownish. The upper part of 

 the head is light blue ; the anterior part of the forehead, and 

 a band encircling the head, white. A line of dusky blue passes 

 from the bill to the eye, and another from it to the occiput, 

 where it meets a band of dark blue, which curves behind the 

 auriculars, and meets on the throat, which is blackish-blue. 

 The cheeks are white. Behind the blue collar, the back of 

 the neck is bluish- white. The back is pale yellowish-green, 

 tinged with blue, the rump lighter and faintly mottled with 

 whitish. The smaller wing-coverts are light blue, the secon- 

 dary coverts the same, tipped with white ; the quills, primary 

 coverts, and alula, are greyish-brown, broadly margined ex- 



