"The Coming Race", Chapter XXII, by Edward Bulwer-Lytton

graminivorous: feeding on grass or the seeds of grass

On the matter of observing the Vril-ya's teeth, we get this footnote from the author/narrator: "I never had observed it; and, if I had, am not physiologist enough to have distinguished the difference."

The picture used is "Sail Ship" by Teezec, used here under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported license (https://creativecommons.org/licenses/by-nc-nd/3.0/).

To follow along: https://www.gutenberg.org/files/1951/1951-h/1951-h.htm#link2HCH0022