296 



GEOGRAPHICAL ZOOLOGY. 



Tpart IV. 



to the temperate sub-region ; species occur in the islands of 

 Mas-a-fuera, Trinidad, and Tobago. 



Sub-family IV. Philydokin^ (6 genera, 35 species). Con- 

 fined to Tropical America from Brazil to Mexico ; 4 genera and 

 8 species occur in Tropical North America. 



Sub-family V. Dendkocolaptin^ (14 genera, 59 species). 

 Eanges from Chili and La Plata to Mexico; only 3 species occur in 

 the South Temperate sub-region, while 9 of the genera extend into 

 Tropical North America. Two of the continental species occur 

 in the island of Tobago, which, together with Trinidad, forms 

 part of the South American rather than of the true Antillean 

 sub-region. 



Family 45.— FORMICAEIID^. (32 Genera, 211 Species.) 



General Distribution. 



The Formicariidse, comprising the Bush-Shrikes and Ant- 

 thrushes, form one of the most exclusively Neotropical 

 families ; and the numerous species are rigidly confined to the 

 warm and wooded districts, only a single species extending to 

 La Plata, and none to the Antilles or to the Nearctic region. 

 Less than 30 species are found north of Panama. Messrs. 

 Sclater and Salvin divide the group into three sub-families, 

 whose distribution may be conveniently treated, as in the Den- 

 drocolaptidae, without enumerating the genera. 



Sub-family I. Thamnophilin.^. — (10 genera, 70 species.) One 

 species of Thamnopliilus inhabits La Plata ; only 3 genera and 

 12 species are found north of Panama, the species of this 

 sub-family being especially abundant in the Equatorial forest 

 districts. 



Sub-family II. Pormicivorinje. — (14 genera, 95 species.) Only 

 8 species occur north of Panama, and less than one-third of the 

 species belong to the districts south of the Equator. 



