Caudata

Table 1.—Variation in the Shape of the Supraorbital and Postorbital Cranial Crests in Bufo marmoreus and B. perplexus.

Table 2.—Comparison of Certain Measurements and Proportions in Bufo marmoreus and B. perplexus. (Means Are Given in Parentheses Below the Ranges.)

Table 3.—Snout-vent Length Expressed as a Percentage of Tibia Length in Animals of Six Color Patterns of Microbatrachylus pygmaeus. (Letters Refer to the Variants Having the Color Pattern Discussed Immediately Below)

Table 4.—Comparison of Four Characters in Five Samples of Diaglena. (All Data Are for Males; Means Given in Parentheses Below Ranges.)

Table 5.—Comparison of the Ten Species and Subspecies of Cnemidophorus in Michoacán (Scale Counts Are for Specimens from Michoacán Only)

Table 6.—Variation in Scutellation in Thamnophis dorsalis.