Here is a short article, from an antique book, about Vampire Bats. The article states that the Vampire Bat of South America measures two or three feet from tip to tip of the wings. It lives by sucking blood from different animals, which it does while they are asleep, and commonly without awaking them. Included in the article is an illustration of a large Vampire Bat in flight. The image is from Hooker’s Illustrated Natural History by Worthington Hooker, M.D. The book was published in 1864.
Here is a black and white clip art version of the Vampire Bat.
Click on images to enlarge.