GEOGRAPHICAL DISTRIBUTION 



136. The Region of the Galapagos Islands. Described as pro- 

 perly unwooded, and as abounding in Cacti. 



137. The WARM arid region of Northwestern Mexico. From 

 N. lat. 22° to 27°, and between the great Interior Table-land and the 

 Sea. Described as almost a Desert-region, but the annual " rains 

 bringing out some trace of vegetation." Including also the Southern 

 Extreme of the California Peninsula, described as even more arid, 

 with a " perpetually serene sky ;" and said also to abound in Cacti. 



138. The WARM region of Eastern Mexico. Between the great 

 Interior Table-land and the Mexican Gulf, and from N. lat. 27° to 

 or perhaps beyond N. lat. 20°. Described as in great part arid and 

 unwooded. 



139. The GuATiMALAN Forest Region. Including Yucatiin, and 

 the narrow Southwestern portion of Mexico between the Table-land 

 and the Pacific. Described by Hall, who visited it from the West, as 

 richly wooded all along the Pacific. 



140. The Caribbean or West Indian Island-Region. Including 

 the Southern Extreme of Florida from the parallel of N. lat. 27°. 



141. The Forest Region of Panama and Western Colombia. 

 The country between the Gulf of Maracaybo and the Pacific, includ- 

 ing the Panama Isthmus, and extending Southward along the Pacific 

 to about S. lat. 4°. Described as thickly-wooded and extremely rainy, 

 especially ''between N. lat. 9° and S. lat. 3°," to which limit, accord- 

 ing to Hall, "the wet weather predominates." 



142. The EXTENSIVE Llanos or Plains of the Orinoco. Described 

 as savanna-like, nearly level, and almost entirely unwooded. 



143. The Western portion of the great Equatorial Forest. 

 Commencing in the profuse rains along the base of the Andes, and 

 extending over the basin of the Amazon River, perhaps halfway to 

 the coast; described as a heavy continuous forest throughout. The 

 species of trees and plants seem very generally to differ from those 

 growing nearer the Atlantic. 



144. The Eastern portion of the great Equatorial Forest. 

 Extending North of the Amazon River over Guiana, and as far as the 

 Delta of the Orinoco. Described as everywhere a heavy unbroken 

 forest. 



145. The unwooded region of the Upper Parana, or of Tucuman 

 and Paraguay. Trees are said to occur in Paraguay " only along the 



