. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. (fast. c&s. B FIG. 146. — Development of Distomum. A, ciliated larva ; /?. sporocyst con-taining developing rediae ; C, redia, containing a daughter redia and embryoliver-flukes; D, free-swimming, tailed larva of liver-fluke;- b. op, birthopening; etit, food canal of redia; eye, eyespots; gast, young redia; r/erni,mor, early stages in formation of the embryo liver-fluke; int, intestine oflarval liver-fluke; o?s, oesophagus; or. SK, oral sucker; pap, head papilla ofciliated larva, A: ph, pharynx
. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. (fast. c&s. B FIG. 146. — Development of Distomum. A, ciliated larva ; /?. sporocyst con-taining developing rediae ; C, redia, containing a daughter redia and embryoliver-flukes; D, free-swimming, tailed larva of liver-fluke;- b. op, birthopening; etit, food canal of redia; eye, eyespots; gast, young redia; r/erni,mor, early stages in formation of the embryo liver-fluke; int, intestine oflarval liver-fluke; o?s, oesophagus; or. SK, oral sucker; pap, head papilla ofciliated larva, A: ph, pharynx; proc, processes of redia; vent, su, ventralsucker. After Thomas. animal, the embryos attach themselves to the food canal of •> their host and form, by rapid growth, a long chain of seg-ments, each of which is full of germs. The chain, or NEREIS AND ITS ALLIES 157
Size: 1581px × 1581px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1900
