. An introduction to zoology : for the use of high schools . if are secreted by mantle-lobes, whicli, of course, have likewise a totally different relation to the body from what exists in the Lamellibranchs. Their edges are beset with setae, like those of worms, and they contain pro. cesses from the coelom in which theFijr. \&X—Rhvnchonella plena. , i x- i rn, • i • Chazy Formation. eggS are to be tound. iho animal IS confined to the attached end of the shell (Fig. 164) the roomymantle-cavity beingoccupied by a pair ofcoiled-up arms, fring-ed with tentacles,which take their ori-<rin on eith
. An introduction to zoology : for the use of high schools . if are secreted by mantle-lobes, whicli, of course, have likewise a totally different relation to the body from what exists in the Lamellibranchs. Their edges are beset with setae, like those of worms, and they contain pro. cesses from the coelom in which theFijr. \&X—Rhvnchonella plena. , i x- i rn, • i • Chazy Formation. eggS are to be tound. iho animal IS confined to the attached end of the shell (Fig. 164) the roomymantle-cavity beingoccupied by a pair ofcoiled-up arms, fring-ed with tentacles,which take their ori-<rin on either side of ,the mouth. Thesearms (at one timesupposed to be equiv-alent to the Molluscan Fig. 164.—Diagrram of Rhynchonella, aa seen from the . , side with the shell jiartly removed. foot hence the name «, anterior ; h, posterior or hinge area of shell; p. „ , •, V _ peduncle, s, stomach embedded in the liver and com- OI the class—J SJ-re municating with the cesophag-us in front,,and the intestine -, ill behind: d, opening, o, closing mu
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1889
