. Text book of zoology. Zoology. Claxs 3. Echinoidea. 135 a small, smooth, wart-like elevation; the largest knobs occur on the imperforate interambulacral plates. The upper ends of the twenty- rows of plates touch upon a circle of ten apical plates, five *-^. 1 B Fig. 89. Shell of a Eegular Sea-nrchin, Toxoptieustes Droebachiensis (young speoimen, enlarged), from above (A) and from below (B). The radii are dark, g genital plate, m madreporite, o ocular plate. In the middle of A is the anal area with the anus,— Please note that these images are extracted from scanned page images that may
. Text book of zoology. Zoology. Claxs 3. Echinoidea. 135 a small, smooth, wart-like elevation; the largest knobs occur on the imperforate interambulacral plates. The upper ends of the twenty- rows of plates touch upon a circle of ten apical plates, five *-^. 1 B Fig. 89. Shell of a Eegular Sea-nrchin, Toxoptieustes Droebachiensis (young speoimen, enlarged), from above (A) and from below (B). The radii are dark, g genital plate, m madreporite, o ocular plate. In the middle of A is the anal area with the anus,— 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 Boas, J. E. V. (Johan Erik Vesti), 1855-1935; Boas, J. E. V. (Johan Erik Vesti), 1855-1935. Lehrbuch der Zoologie. London, Sampson Low, Marston
Size: 1448px × 1725px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1896
