. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 402 Bulletin Museum of Comparative Zoology, Vol. 148, No. 8 0OOOOOQ Mclh-2. o o O / \ o o o o o o o o o o o Figure 12. Geographic variation in malate dehyclrogenase-2. Sample locality numbers may be discerned from Figure 3. ct al., 1974; \\'oodmff, 1975). Data in Ta- ble 12 and Fig. 11 indicate that there is no consistent difference in allele frequency between C. bendalli and C. morphot\'pes on Great Abaco where Mdh-T' varies in frequency between in both taxa. Elsewhere, frequencies of Mdli-1&quo
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 402 Bulletin Museum of Comparative Zoology, Vol. 148, No. 8 0OOOOOQ Mclh-2. o o O / \ o o o o o o o o o o o Figure 12. Geographic variation in malate dehyclrogenase-2. Sample locality numbers may be discerned from Figure 3. ct al., 1974; \\'oodmff, 1975). Data in Ta- ble 12 and Fig. 11 indicate that there is no consistent difference in allele frequency between C. bendalli and C. morphot\'pes on Great Abaco where Mdh-T' varies in frequency between in both taxa. Elsewhere, frequencies of Mdli-1" are slightly different: being lower on Little Abaco (), and higher on Grand Bahama (). Al- lele frequencies in adjacent populations are similar, and no dramatic shifts or clines in allele frequency were noted. There is no marked change in this allozyme in the area of interaction between C. bendalli and C. ahacocnse on Great Abaco. Malate Gould et al. (1974) found two alleles at this locus in populations of C. bendalli from northern Great Abaco. NAD-Mdh-2^' is a rare allele () that occurs in standard C. ben- dalli and in some samples of the aberrant Pongo Carpet morphotype found in this area. This allele was detected in popula- tions extending from the eastern end of Little Abaco (Loc. 216) south to Treasure Cay, a distance of about 30 km. (It was not found in the three most isolated (and morphometrically differentiated) of the Pongo Carpet samples.) Subsequently, Woodruff (1975) reported Mdh-2" was ab- sent in 3 samples of C. bendalli from locali- ties about 50 km. south of this area. We now report that the Mdh-2'' allele has not been detected in over 1,000 snails from else- where on the Little Bahama Bank (Table 12, Fig. 12). We conclude that C. bendalli and C. abacoense are not differentiated at. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - co
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