. Breviora. 19(i0 ANOLIS BIPORCATUS AND ANOLIS FRASERI 5 ill one species completely overlaps tlie known range of the other. I have omitted this character. The most striking differences are emphasized hy italicizing the pertinent characters for fraseri. Both are large, short-legged, stout-bodied, relatively short- headed forms. The similarities are indeed amazing since the two species are, according to Etheridge, osteologically in totally different sections of the genus. Tiie similarities would be even greater if Mexican and other northern biporcatus were com- pared with fraseri since the north
. Breviora. 19(i0 ANOLIS BIPORCATUS AND ANOLIS FRASERI 5 ill one species completely overlaps tlie known range of the other. I have omitted this character. The most striking differences are emphasized hy italicizing the pertinent characters for fraseri. Both are large, short-legged, stout-bodied, relatively short- headed forms. The similarities are indeed amazing since the two species are, according to Etheridge, osteologically in totally different sections of the genus. Tiie similarities would be even greater if Mexican and other northern biporcatus were com- pared with fraseri since the northern animals tend to have 3-4 scales between the supraorbital semicircles (c/. Stuart, 1955). Overlapping variation in many features, as shown in Table 1, is characteristic of many sympatrie species in Ayiolis and is one of the several reasons why this genus is described as "; As in all such cases, the recognition of the valid species depends upon recognition of the constant (or almost constant) associa- tion of characters, however trivial. Smooth ur keeled scales, sul)- oculars in contact with or separated from supralabials, inter- parietal large or small are none of them characters universally useful in Anolis. The distinctive supraciliaries of fraseri are more useful because a substantial morphological gap between this condition and that shown by hiporcatiis will always distin- guish these two species. (The fraseri supraciliaries occur, how- ever, also and in a more exaggerated degree in latifrons; the condition is not unique to fraseri.). F'liX- -â Anulis , new subspecies, ^ICZ 78935. Dorsal view of liead of 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. , Museum of Comparative Zool
Size: 1985px × 1259px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversitymuseumofcomparative, bookcentury1900
