566 REPORT OF NATIONAL MUSEUM, 1902. 



only 3,485 feet. Nevertheless, there are several species which are 

 confined either to the lowlands or to the mountains respectively, while 

 others range over the whole territory, from sea level to the highest 

 peaks. The elevations reached ])y the batrachians and reptiles vary 

 to a great extent locally, depending, as they do, on the climatic con- 

 ditions. Consequently, the species inhabiting the higher altitudes 

 descend lower on the northern slope of the great mountain chains 

 which traverse the island from east to west, and the lowland species 

 ascend higher on the southern slope. 



Only a single species ranges all the way from sea level to the high- 

 est mountain tops, namely, the tree toad, or coqui {Eleutlierodactylus 

 aurlcuIatuH). 



On the other hand, about ten species are confined to the lowlands, 

 some never reaching, others ver}- seldom ascending, beyond 500 feet. 

 In this category fall the following species: 



Bufo lemur. 



Jleniidactylus niahouia. 



SpJiderodactylus grmidisquamis. 



Mahuya slomiii. 



Anieiva exid. 



Anolis ^ulchellus. 



AtwUs jooncensis. 



Typldiypx hunhricalis. 



Alsojyhis portoricensis. 



Pseudemys palustris. 

 A few species reach well into the coffee belt, though it is doubtful 

 whether they go much beyond 1,000 feet altitude, namely: 



Anolis Guvieri. 



Amphishsena cseca. 



Epicrates inornatus. 



Leimadophis stahli. 

 Others, again, we know to range from sea level to about 1,600 feet, 

 such as — 



Leptodactyltcs alhilabris. 



Afiolis crisfatellus. 



Anolis stratulus. 

 Among the species which do not descend to sea level there are a few 

 confined to intermediate altitudes. These range between about 500 

 and 1,500 feet, though the blind snake and the blind lizard probably 

 do not reach much higher than 1,000 feet. They are: 



Celestus ])leli. 



Anolis hrugi. 



Amphishsetia hakeri. 



Typhlops rostellatus. 



