400 GEOGRAPHICAL ZOOLOGY. [pakt iv. 



North Australia ; Gehyra (5 sp.), Australia, New Guinea and 

 Fiji Islands ; Tarentola (7 sp.), North Africa, North America, 

 Madeira, Borneo, South Africa ; Phelswma (6 sp.), Madagas- 

 car, Bourbon, and Andaman Islands ; Pachydactylus (5 sp.), 

 South and West Africa, and Ascension Island ; Sphcerodadylus 

 (5 sp.), the Neotropical region ; Naultinus, (6 sp.), New Zealand ; 

 Goniodadylus (5 sp.), Australia, Timor, South America and 

 Algiers ; Heteronota (4 sp.), Australia, Fiji Islands, New Guinea 

 and Borneo ; Cubina (4 sp.), the Neotropical region ; Gymno- 

 dactylus (1G sp.), all warm countries except Australia; Phyllurus 

 (3 sp.), Australia ; Stenodadylus (4 sp.), North and West Africa, 

 and Rio Grande in North America. 



The remaining genera mostly consist of single species, and 

 are pretty equally distributed over the various parts of the world 

 indicated in the preceding list. Madagascar, the Seychelle Islands, 

 Chili, the Sandwich Islands, South Africa, Tahiti, the Philippine 

 Islands, New Caledonia, and Australia — all have peculiar genera, 

 while two new ones have recently been described from Persia. 



Family 50.— IGUANID^E. (56 Genera, 236 Species.) 



General Distribution. 



The extensive family of the Iguanas is highly characteristic 

 of the Neotropical region, in every part of which the species 

 abound, even as far as nearly 50° South Latitude in Patagonia. 

 They also extend northwards into the warmer parts of the 

 Nearctic region, as far as California, British Columbia, and 

 Kansas on the west, and to 43° North Latitude in the Eastern 

 States. A distinct genus occurs in the Fiji Islands, and one 

 has been described as from Australia, and another from 

 Madagascar, but there is some doubt about these. The most 

 extensive genera are : — 



Anolivs (84 sp.), found in most parts of Tropical America and 



