Description
"These have an elongated form, and a soft, thick, slimy skin; the scales are very minute, and imbedded in the thick, fat, cuticle so as only to be seen when this is dried. The gill orifices are small, and cartried far back, so that the branchiae are protected, on which account these animals can live a considerable time out of water. They are averse to cold and are not found in high northern countries." — Goodrich, 1859
