. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Kchinococcus hominis. (From Wilson.') A and B, grouped and single Echinocoeci, at- tached by peduncles to the inner membrane of the cyst, c, a contracted, and D, an expanded Echino- coccus; a, the peduncle. E, animal, shrivelled. Canurus cerebralis, magnified. (After Bremser.') a a, part of the general vesicle; b, an expanded head; r, a shorter head, showing the double circle of booklets. The Cysticercus has been described in two forms ; 1st, in its simply vesicular state, and 2nd, in its fasciolated condition, or in its
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Kchinococcus hominis. (From Wilson.') A and B, grouped and single Echinocoeci, at- tached by peduncles to the inner membrane of the cyst, c, a contracted, and D, an expanded Echino- coccus; a, the peduncle. E, animal, shrivelled. Canurus cerebralis, magnified. (After Bremser.') a a, part of the general vesicle; b, an expanded head; r, a shorter head, showing the double circle of booklets. The Cysticercus has been described in two forms ; 1st, in its simply vesicular state, and 2nd, in its fasciolated condition, or in its transition, as it may beheld, to the cestoid, or a more advanced tape form. The vesicular Cysticercus has surface of the cyst* While enclosed in the pediculated vesicles, the head of each echino- coccus is retracted within the short vesicular body in a manner which seems to be general among the young of encysted Entozoa. They are afterwards set free, and in this state are found floating as minute whitish particles in the fluid of the cyst. They then present the appear- ance of minute heads of Taeniae, with a short body scarcely larger than the head ; the latter part being furnished with a terminal double circle of booklets, and four The mode of gemmation may probably vary in different circumstances, more particularly in regard to the extent to which the progeny of gemmation may or may not repeat the for- mation of others of the same kind ; but every thing that is known of the acephaloc* stic productions seems to point to the view that they are all nearly allied, and that they are abnormal or aberrant conditions of Taenia- Iarva3, which, when they become encysted, are incapable of development into the cestoid form which belongs to those that have reached the free intestinal habitation. The Ccenurus, which has been met with principally in the brain and some other parts of the sheep and some other Ruminating ani- mals, consists of a large cyst or vesicle with a number
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