Otaria Byronia vs South American sea lion

Otaria Byronia

South American sea lion

noun
  • A sea lion, Otaria flavescens, found on the Chilean, Peruvian, Uruguayan and Argentine coasts, with a very large head with an upturned snout. 

How often have the words Otaria Byronia and South American sea lion occurred in a corpus of books? (source: Google Ngram Viewer )