With fifteen pairs of claw-bearing ambulatory legs, with three spinous pads on the legs, and a primary papilla projecting from the median dorsal portion of the feet. Genital opening between the legs of the last pair. Receptacula seminis present. Unpaired portion of vas deferens long and complicated. Ova large and heavily charged with yolk. (Colour variable, number of legs constant in same species (?).) P. NOVAE ZEALANDIAE (Hutton).—Australasian _Peripatus_, without an accessory tooth on the outer blade of the jaw, and without a white papilla on the base of the last leg of the male. New Zealand. P. LEUCKARTI (Saenger).—Australasian _Peripatus_, with an accessory tooth on the outer blade of the jaw, and a white papilla on the base of the last leg of the male. Queensland. NEOTROPICAL SPECIES. With four spinous pads on the legs, and the generative aperture between {25}the legs of the penultimate pair. Dorsal white line absent. Primary papillae divided into two portions. Inner blade of jaw with gap between the first minor tooth and the rest. Oviducts provided with receptacula ovorum and seminis. Unpaired part of vas deferens very long and complicated. Ova minute, without food-yolk. (Colour fairly constant, number of legs variable in same species (?).) P. EDWARDSII.[8]—Neotropical _Peripatus_ from Caracas, with a variable number of ambulatory legs (twenty-nine to thirty-four). Males with twenty-nine or thirty legs, and tubercles on a varying number of the posterior legs. The basal part or the primary papilla is cylindrical. P. TRINIDADENSIS (n. sp.).—Neotropical _Peripatus_ from Trinidad, with twenty-eight to thirty-one pairs of ambulatory legs, and a large number of teeth on the inner blade of the jaw. The basal portion of the primary papillae is conical. P. TORQUATUS (Kennel).— Neotropical _Peripatus_ from Trinidad, with forty-one to forty-two pairs of ambulatory legs. With a transversely placed bright yellow band on the dorsal surface behind the head. _Doubtful Species._ The above are probably distinct species. Of the remainder we do not know enough to say whether they are distinct species or not. The following is a list of these doubtful species, with localities and principal characters:— P. JULIFORMIS (Guilding).—Neotropical _Peripatus_ from St. Vincent, with thirty-three pairs of ambulatory legs. P. CHILIENSIS (Gay).—Neotropical _Peripatus_ from Chili, with nineteen pairs of ambulatory legs. P. DEMERARANUS (Sclater).—Neotropical _Peripatus_ from Maccasseema, Demerara, with twenty-seven to thirty-one pairs of ambulatory legs and conical primary papillae. PERIPATUS FROM CAYENNE (Audouin and Milne-Edwards).—With thirty pairs of legs. Named P. EDWARDSII by Blanchard. PERIPATUS FROM VALENTIA LAKE, COLUMBIA (Wiegmann).—With thirty pairs of legs. PERIPATUS FROM ST. THOMAS (Moritz).—No description.