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 by 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 {Eleutherodactylus 

 auriculatus). 



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

 some never reaching, others very seldom ascending, beyond 500 feet. 

 In this categoiy fall the following species: 



Bufo lemur. 



Ilenddactylus muhouia. 



Sphderodactylus gran disquamis. 



Mabuya sloanii. 



Ameiva exul. 



Anolis pidchellus. 



A nobis pon cen sis. 



Typhlops lumbricalis. 



AlsopJi is portorivensis. 



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 earner'). 



Amphisbdena cs&ca. 



Epicrates inornatus. 



Leini adoph Is stahli. 

 Others, again, we know to range from sea level to about 1,500 feet, 

 such as — 



Leptodactylus alhilabris. 



Anolis cristatellus. 



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 jjleii. 



Anolis hrugl. 



AmpJiish;i j )ui bakeri. 



Typh lops Tostellatus. 



