elephant-beetlen. some South American beetle, probably Dynastes Neptunus; the name has also been applied to the African species Goliathus giganteus and G. cacicus.
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1774 O. GoldsmithHist. Earth VIII. 139 The Elephant-beetle..is found in..Guiana and Surinam.
1777 Henly in Philos. Trans. (Royal Soc.) 67 123 Thigh of the elephant beetle.