102 



HLBMBNTS OP OEIflTEOLO&Y. 



which shows itself even in our towns. "We take the Coal Tit 

 (Parus britannious)- as our example of this group of Birds, 

 of which there are seventy-seven species, the greater number, 

 and the brighter kinds, being confined to the Old World. 

 "With few exceptions, they do not extend beyond the Northern 

 Hemisphere. 



Fig. 107. 



Goal Titmouse (Parus bntatmiciis). 



A very numerous group of small, brilliant Birds, confined to 

 America, and mainly to Tropical America, are known as 

 Tanagers, and there seem to be no less than three hundred and 

 seventy-four species of them. Their plumage is very often 

 more or less extensively or markedly red, but may be of various 

 other bright tints, and Tanagra episcnpus, which may stand as 

 our type, is of a pale blue colour marked with white spots. 



