. A manual of zoology. Zoology. Fin. Z51.^Head and ripe proglottids of Bothriocephalus latus, the head showing the sucker at the angle, the proglottids the marking produced by the uterus. Family 6. Tjeniadje. With scolex and separable proglottids; the soolex always bears four suckers and in many a ro- stellum with a circle of hooks (fig. 252). In the proglottids the vitellarium is replaced by an albumen gland; the uterus is ceecal, and the genital pore occurs usually laterally in the proglottids, alternating right and left, rarely only on one side (Hyinenolepis, Anoplocepha- lus). It is raj-el
. A manual of zoology. Zoology. Fin. Z51.^Head and ripe proglottids of Bothriocephalus latus, the head showing the sucker at the angle, the proglottids the marking produced by the uterus. Family 6. Tjeniadje. With scolex and separable proglottids; the soolex always bears four suckers and in many a ro- stellum with a circle of hooks (fig. 252). In the proglottids the vitellarium is replaced by an albumen gland; the uterus is ceecal, and the genital pore occurs usually laterally in the proglottids, alternating right and left, rarely only on one side (Hyinenolepis, Anoplocepha- lus). It is raj-ely doubled in a proglottid {Dipylidiuin, Moiiiezia). Intermediate stage a cysticercus or cysticercoid. The human tape- worms are grouped here together, but are sub- divided accordingly as the sexual animal or the cysticercus has been found in man. A. TuinicB sexually mature in the human intestine. Most noticeable are Tcenia solium and T. saginata, the differences between which are shown in fig. 252 and the follow- ing table. It is to be noticed that, in spite of the lack of hooks, the stronger suckers render T. Sdfilnuta more difficult to expel. Tixnia Fig. ;)2.âHead and ripe pro- ,. " ii i -1,1 1, ⢠i â ii glottid of (^4) Taiiiiii saginata solium, as the table shows, is not rare in the and (£) r. suiium. cysticercus stage in man and occurs sometimes in places, like the brain and eyes, where it causes severe injury. These cases are in part explained by lack of cleanliness in the food, which may contain eggs, but it is possible through internal infection ; pieces of the worm passing the pylorus and entering the stomach, where they are digested, setting the embryos Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
