Porrigo, mortality in England from, [285]
Poultry lousiness not a human disorder, [274]
Proglottides mistaken for Distomata, [16]
Prosthecosacter, several species of, [423]
" specimens of, in Hunter’s Museum, [427]
Proteles or earth-wolf, parasites of, [299]
Protozoa, parasitic families belonging to the, [7]
" parasitic forms of, and gregarinæ, [278]
Psorospermiæ as a family of Protozoa, [7]
" considered as human parasites, [277]
Psorosperms abundant in the hog, [414]
" in the flesh of animals, [281]
Pulex penetrans, gigger or chigoe, [274]