. A manual of zoology. '72 MANUAL OF ZOOLOGY Ap. Int. ami InlcunJ) Fig. 95. — Corona of sea-urchin with the spines removed to show the arrangement of the plates, lateral view. Amb, ambulacral zone with its perforated plates; Ap, apical (aboral) pole; Int. ami', inter-ambulacral zones. (From Bronn's Thierreich.) sharp tooth. The points of these five teeth can be seen through the opening of the mouth. The enteric canal has no radiating cceca. The five ducts of the reproductive or- gans open on five ossicles, the genital plates (Fig. 96, gen), which with five smaller ocu- lar plates (oc) eac
. A manual of zoology. '72 MANUAL OF ZOOLOGY Ap. Int. ami InlcunJ) Fig. 95. — Corona of sea-urchin with the spines removed to show the arrangement of the plates, lateral view. Amb, ambulacral zone with its perforated plates; Ap, apical (aboral) pole; Int. ami', inter-ambulacral zones. (From Bronn's Thierreich.) sharp tooth. The points of these five teeth can be seen through the opening of the mouth. The enteric canal has no radiating cceca. The five ducts of the reproductive or- gans open on five ossicles, the genital plates (Fig. 96, gen), which with five smaller ocu- lar plates (oc) each bearing a rudimentary eye, form a complete ring round the space (peripr) at the anal pole, in the middle of which is the anus; a madreporite is amalgamated with one of the genital 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 Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1900
