. An introduction to zoology : for the use of high schools . Fig. egg-sacs fromgills of sunfish xiu Fig. 130.—Ach-thercs from gillsof catfish X 6. This form attaches itself by the anterior foot-jaws, which aremodified into suckers, but it is the piercing and sucking mouthwhich injures the fish. The remaining oider — the Cirri-pedia—lias only marine forms, whichpass through an active larval phase,but eventually attach themselves bytheir heads and secrete a compli-cated shell (Figs. 131 and 132). Theantennae are rudimentary, but thi-eepairs of jaws are present, and behindthes
. An introduction to zoology : for the use of high schools . Fig. egg-sacs fromgills of sunfish xiu Fig. 130.—Ach-thercs from gillsof catfish X 6. This form attaches itself by the anterior foot-jaws, which aremodified into suckers, but it is the piercing and sucking mouthwhich injures the fish. The remaining oider — the Cirri-pedia—lias only marine forms, whichpass through an active larval phase,but eventually attach themselves bytheir heads and secrete a compli-cated shell (Figs. 131 and 132). Theantennae are rudimentary, but thi-eepairs of jaws are present, and behindthese, six parrs of biramous feet,which by their movements bi-ing food particles to the mouth. These are, however, absent in certain parasitic
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1889
