SUPER-ORDER MYCETOPHORA. Differing from the foregoing orders of Epectinate in having the first, or genital, somite of the ab domen jointed to the cephalothorax without the intervention of a waist or of the pregenital somite and in the presence of spiracles on the fourth segment of the cephalothorax; and distinguishable from all orders by the firm articulation of the mandibles to the sides of the carapace, the partial freedom of the fourth tergal plate from the carapace and the presence of racket-shaped pro cesses or malledi on the basal segments of the fourth legs.
Order Solifugae. Cephalothorax jointed, its fifth and sixth seg dae Phaleidae (Pholeus), Dysderidae (Dysdera) and others too numerous to mention. (See SPIDER, TARANTULA.) Order Palpigradi. Resembling some Pedipalpi in the tail-like termination of the body and the segmented carapace, but differing essentially from them in having ten abdominal somites without separated terga and sterna, in the absence of breathing organs in the large, chelate, three-jointed mandibles, the slender, pediform palpi with their basal segments widely separated, jointed to the sides of a large sternal plate and disconnected from the mouth, which opens at the end of a projecting proboscis, and in the palpi f orm locomotor first pair of legs.
The order contains one genus Koenenia; family Koeneniidae. It is a minute arachnid found in Europe and America.