Sporocysts or unorganised germ-sacs, [453]
Squirrels, internal parasites of, [315]
Stephanurus dentatus discovered by Natterer, [407]
" Diesing’s description of, [408]
" in Australia, announcement respecting, [409]
" in relation to porcine epizoöty, [411]
" Nattereri, proposed synonym, [412]
" Professor Fletcher’s account of, [411]
" rediscovered by Dr White, [409]
Sticklebacks, Gyrodactylus from the tail of, [466]
Stoat, parasites found in the common, [299]
Stomoxys calcitrans, or the leg-sticker, [273]
Strongyle, meaning and origin of the term, [4]
Strongyles, Welsh equine epizoöty from, [377]
Strongylidæ, family of round worms, [5]
Strongylus acuticaudatus from a Tinamou, [447]
" armatus of the horse, [367]
" dentatus confounded with Stephanurus, [412]
" (Eustrongylus) gigas, found in man, [208]
" filaria, experiments by Leuckart with, [337]
" " temperature necessary to kill the, [70]
" micrurus, or cattle lung-worm, [335]
" " original experiments with, [337]
" minutissimus in Algerian sheep, [346]
" Pallasii from Beluga leucas, [427]
" paradoxus a cause of husk, [412]
" pergracilis and the grouse disease, [439]
" tetracanthus, larvæ of, [374]