. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Turks and Caicos Cerion • Gould and Woodruff 333 SD'. Figure 6. Normalized factor loadings for C. regina samples only. Symbols as in Figure 5. gerated in Figure 6 because factor analysis in varimax rotation tends to absorb uniquenesses on separate axes. The dis- tinctive features of Sand Cay are abstract- ed by this axis; when plotted into mor- phospaces that do not include this dimension (as in Fig. 1), Sand Cay plots near all other populations of the tapering morphotype on Turks Bank. The designation of Sand Cay's u
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Turks and Caicos Cerion • Gould and Woodruff 333 SD'. Figure 6. Normalized factor loadings for C. regina samples only. Symbols as in Figure 5. gerated in Figure 6 because factor analysis in varimax rotation tends to absorb uniquenesses on separate axes. The dis- tinctive features of Sand Cay are abstract- ed by this axis; when plotted into mor- phospaces that do not include this dimension (as in Fig. 1), Sand Cay plots near all other populations of the tapering morphotype on Turks Bank. The designation of Sand Cay's unique- ness by an entire axis compresses all other variation into the smaller space of two di- mensions. Thus, to expand the portrayal of normal-sized samples in the tapering morphotype, we eliminated the Sand Cay population and repeated the analysis, plot- ting the triangular diagram as Figure 7. Note that the ordering of normal-sized samples is thereby spread out, but not in any way altered (compare Figs. 6 and 7). The basically linear array of South Caicos- East Caicos-Grand Caicos-Providenciales remains. This array is compressed into two axes on Figure 6, but expanded to three in Figure 7, as the sequence remains fixed in second axis projections, while each is- land now spreads out along the domains of axis one and three. The Sand Cay population bears, by Clench's own decision (as curator of Mol- lusks at the Museum of Comparative Zo- ology), the name C. utowana abbotti, one. 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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