. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. The o\ca Lineage: Subdigital Fine Structure • Peterson and Williams 221. Figure 3. The fine structure of multicarinate scale ^7 \r\ A. annectens. a) Shows the central keel and adjacent fields of spines, b), c), and d) Are progressively higher magnifications of the spinate surface. Note the low hillocks in (b) and (c) and the presence of many small spines and knobs in (d) (compare with Figs. 21 and 22). chanoreceptor. The surface of the scale appears "velvety," but less so than the lamellar scales. Based on g
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. The o\ca Lineage: Subdigital Fine Structure • Peterson and Williams 221. Figure 3. The fine structure of multicarinate scale ^7 \r\ A. annectens. a) Shows the central keel and adjacent fields of spines, b), c), and d) Are progressively higher magnifications of the spinate surface. Note the low hillocks in (b) and (c) and the presence of many small spines and knobs in (d) (compare with Figs. 21 and 22). chanoreceptor. The surface of the scale appears "velvety," but less so than the lamellar scales. Based on gross characters it is neither a lamellar nor a multicarinate scale. The fine structure also suggests the in- termediate character of the scale (Fig. 5; Fig. 21 for definition of types). The sur- face architecture of the bosses is similar to that of the keels on the multicarinate scales. In a few regions, particularly ad- jacent to the central keels, there are fields of small spines ( /u, diameter at the base; a density of spines/sq fx).. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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