in natural history, a name given by the old Greeks to a small animal of the spider kind, whose bite was accounted mortal. It is the same with the folipugia, so called from its flinging, or biting most violently, in places, or fountains, where the sun had the most power, as Africa, &c. The name folipugia was a corrupt way of writing that word; and this seems also a false way of writing the word heliocentros, which signifies the same as folipugia.