EXPLANATORY INDEX. 357 



native can make these sandals as well as twist the thongs 

 from the outer fibres of the same leaf, there is no difficulty 

 in keeping up the supply. 



Ai. See Sloth, Three-toed. 



ALBICORE (Thynnus pacificus). As its scientific name im- 

 plies, it is closely related to the celebrated tunny. It is a 

 voracious fish, and is easily taken by a hook when there is 

 a smart breeze, and the ship is going swiftly through the 

 water, but in a calm, the Albicore becomes suspicious, and 

 will not come near the ship. 



ALLIGATOR. See Cayman. 



ANHINGA (Plotus anhinya). This very remarkable bird 

 belongs to the important group of the Pelicans, and is a 

 mighty catcher of fish. It pursues its prey in a most singular 





fashion. It crawls along some rock or tree-stump, which 

 overhangs the water, and sits so motionless that it is 

 scarcely distinguishable. When it sees a fish within reach, it 



