482 



TEXTBOOK OF ZOOLOGY 



Classification 



There are estimated to be about 1,900 known species of living 

 frogs, toads, and salamanders in the world, and about 60 species 



Fig. 267. — Typhlomolge rathbuni, the blind cave salamander of Texas. (Photo- 



grapii by Sanders.) 





''^^i.t ' ■ '^M 



Fig. 268. — Pseudacris streckeri, Strecker's ornate chorus frog. (Photograph by 



Thos. Mebane Jones.) 



of caecilians. None of the caecilians have been reported from the 

 United States. In the United States there occur about 79 species 

 of salamanders and about 70 species of frogs and toads.* Many of 



♦According to the Check List of North America Amphibia and Reptiles by 

 Stejneger and Barbour, 4th edition. 



