There was a time when, to be a biologist, you either had to be able to draw well (or be able to may someone to do your drawing for you). Toilets also did not flush. It was a rough time. You can revisit some of that magic at The British Library’s Flickr page where there are literally oodles of images from old books provided free from copyright restrictions, because the books are old.
I don’t know what this critter is*, but I am glad that I am a lot bigger than it is. I think I’m bigger than it…
*It literally comes from a tome entitled The British Miscellany: or, coloured figures of new, rare, or little known animal subjects, etc. vol. I., vol. II