Keywords: Monodelphis dimidiata.jpg The zoology of the voyage of H M S Beagle London Smith Elder Co 1838- http //www flickr com/photos/biodivlibrary/8387114594/in/set-72157632534204211/ 1838 Author PD-old The Zoology of the Voyage of H M S Beagle Part 2 Mammalia 1838 “1839 George R Waterhouse Monodelphis dimidiata |