By way of io9.com, I found this post about a New York Times Magazine article from March 24, 1912. It’s an interview with a zoologist, Edmond Perrier, and it seems as though he had some incredible things to say:

The dampness of the atmosphere on Venus favors the growth of ferns. The development of flowers from the more primitive forms of plants must be slow and probably has not yet been accomplished on Venus. This lack means the absence also of bees, butterflies, perhaps of ants and of other insects which depend partly or entirely on flowers for their food.
Venus, then, is the home of insects like grasshoppers, or dragon-flies, or roaches, grown to an enormous size; of large batrachians, frogs as big as our cows, of innumerable and gigantic reptiles like those which once filled our earth, ichthyosauri, pterodactyls, iguanodons. Man is absent; indeed the race of mammals may not yet have appeared, in even the humblest form.

Clearly this is inspiration for the Rocket To Venus around the corner in Hampden.