lar gibbon vs white-handed gibbon

lar gibbon

noun
  • A primate in the Hylobatidae family, Hylobates lar, with black or brown fur and white hands and feet. 

white-handed gibbon

noun
  • A lar gibbon (Hylobates lar). 

How often have the words lar gibbon and white-handed gibbon occurred in a corpus of books? (source: Google Ngram Viewer )