. Bulletin - United States National Museum. Science. 36 BULLETIN 17 5, UNITED STATES NATIONAL MUSEUM case in jani, to decrease the proportionate tail length from that typical of de-pjiei (fig. 20), to increase the numbers of ventrals and caudals (figs. 21-23), and to develop stripes, all indicate that deppei is the common ancester of these two forms. The derivation of deppei E^S s. affinis. Figure 18.—Distribution of PUuophis deppei deppei, P. , P. lineaticoUis, P. saj/t tai/i, and P. s. affinis. from sayi affinis is suggested by the contiguous ranges of the two forms and by the similari
. Bulletin - United States National Museum. Science. 36 BULLETIN 17 5, UNITED STATES NATIONAL MUSEUM case in jani, to decrease the proportionate tail length from that typical of de-pjiei (fig. 20), to increase the numbers of ventrals and caudals (figs. 21-23), and to develop stripes, all indicate that deppei is the common ancester of these two forms. The derivation of deppei E^S s. affinis. Figure 18.—Distribution of PUuophis deppei deppei, P. , P. lineaticoUis, P. saj/t tai/i, and P. s. affinis. from sayi affinis is suggested by the contiguous ranges of the two forms and by the similarity in pattern. That deppei is derived from affinis, rather than the reverse, seems probable in consideration of the presence in the former of only two prefrontals, and the contact. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
