. The Encyclopædia britannica; a dictionary of arts, sciences, literature and general information. amilyand contains the commonest species; the larva of Echino-rhynchus proteus lives in Gammarus pulex and in small fish,the adult is common in many fresh-water fish: E. polymorphus,larval host the crayfish, adult host the duck: E. angustatusoccurs as a larva in Ascllus aquaticus, as an adult in theperch, pike and barbel: E. moniliformis has for its larvalhost the larvae of the beetle Blaps mticronata, for its finalhost certain mice, if introduced into man it lives well: E. acusis common in whitin
. The Encyclopædia britannica; a dictionary of arts, sciences, literature and general information. amilyand contains the commonest species; the larva of Echino-rhynchus proteus lives in Gammarus pulex and in small fish,the adult is common in many fresh-water fish: E. polymorphus,larval host the crayfish, adult host the duck: E. angustatusoccurs as a larva in Ascllus aquaticus, as an adult in theperch, pike and barbel: E. moniliformis has for its larvalhost the larvae of the beetle Blaps mticronata, for its finalhost certain mice, if introduced into man it lives well: E. acusis common in whiting: E. porrigeus in the fin-whale, and in the seal. A species named E. hominis has beendescribed from a boy. (ii.) Fam. Gigantorhynchidae. A small family of large formswith a ringed and flattened body. Gigantorhynchus gigas hvesnormally in the pig, but is not uncommon in man in South Russia,its larval host is the grub of Melolontha vulgaris, Cctonis auratus,and in America probably of Lachnosterna arcuata: G. echino-discus lives in the intestine of ant-eaters: G. spira in that of the.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
