Plate Illb. 



Fig. 3 — Sarcoptes Scabei, 

 riety Cauis. 



(Male. Ventral view). 



a, Ambulacrum. 



b, Head parts. 



c, Bristles. 



d, Segments of legs. 



Fig. 4 — Sareoptes Seabei, vm 

 riety Canis. 



(Ventral view of ovigerous 

 female). 



a, Rostrum. 



b, Ambulacrum, 



c, Bristle. 

 fll, Uterus. 



