Some elapids are strongly arboreal -LRB- African Pseudohaje and LOCATION@1 , MISC@1 -RRB- , while many others are more or less specialised burrowers -LRB- e.g. PERSON@1 , Parapistocalamus , PERSON@2 , PERSON@3 , LOCATION@2 -RRB- in either humid or arid environments .

Many others are specialised burrowers -LRB- e.g. PERSON@1 , Parapistocalamus , PERSON@2 , PERSON@3 , LOCATION@2 -RRB- .
