Fig. [221].—Chelicera and flagellum of Hexisopus. (After Kraepelin.)
(v.) The Karshiinae include the five genera Ceroma, Gylippus, Barrus, Eusimonia, and Karshia. They are universally distributed.
Fam. 3. Hexisopodidae.—This family is formed for the reception of a single aberrant African genus, Hexisopus, of which five species have been described.
There are no claws on the tarsus of the fourth leg, which is beset with short spine-like hairs, and in other respects the genus is peculiar.
Order VI. Chernetidea.
(CHERNETES, PSEUDOSCORPIONES.)
Tracheate Arachnids, with the abdomen united to the cephalothorax by its whole breadth. Eyeless, or with two or four simple eyes placed laterally. Abdomen segmented, with four stigmata. Chelicerae chelate, bearing the openings of the spinning organs. Pedipalpi large, six-jointed, and chelate. Sternum absent or rudimentary.
The Chernetidea or “False-scorpions” constitute the most compact and natural order of the Arachnida. There are no extreme variations within the group as at present known, while all its members differ so markedly from those of other Arachnidan orders that their true affinities are by no means easy to determine.
The superficial resemblance to Scorpions which has won these animals their popular name is almost entirely due to the comparative size and shape of their pedipalpi, but it is probable that they are structurally much more closely allied to the Solifugae.