SUPER-ORDER RHYNCHOSTOMI. Resembling the Phalangiomorphae in the wide confluence of the cephalothorax and abdomen ; but essentially distinguished by the presence of a wide sternal area between the basal segments of the legs, which are disassociated from the mouth and have no maxillary function, and by the fusion of the basal segments of the palpi beneath the mouth which lies at the front end of the body.
Order Acari (mites and ticks) . Mandibles and palpi very va riable, either the one or the other, frequently both, modified, closely associated with the labrum to form a suctorial proboscis which may be borne on a special segment, the capitulum. Ab four pairs of legs, short, conical and three-jointed. Family dicidae (Demodex), the cause of follicular mange. (See MITE,