CCECILIANS. 399 
The size of different species of the Coecilians varies consider- 
ably. For example, some of them have a diameter of #in., while 
others do not exceed fin. One species (Cecilia gracilis) grows to 
a length of more than 2ft. 
These strange animals are natives of India, Africa, south of the 
Sahara Desert, and North and South America. 
When in captivity they should be provided with plenty of 
damp mould, water, and, as food, earthworms. 
