68 



PsoEOPTES COMMUNIS Fiirst., var. ovis. 



Plate VIII. 



Fig. 1. Young female before moultiug for the last time. 



Fig. 2. Egg drawn from a specimen whicb was inside an adult female. 



Fig. 3. Young six-footed larva. 



Fig. 4. a, open, and 6, closed sucker of Psoro^ies from ears of rabbit; c, the rod which 



connects the membrane on the eud with the muscles which close the 



sucker. 

 Fig. 5. Two views of the mandibles. The lateral spurs, a, a, point outward 



(Meguin). 

 Fig. 6. Head and anterior limb enlarged; ventral view: o, mandibles; J, antennse; 



c, maxillae; d, membrane joining the anteunte ; e, e, e, joints of the limb; 



/, the claw ; g, the ambulacrum or sucker. 

 Fig. 7. Male and female of Psoroptes communis var. equi (Megnin). 



