. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 20 BULLETIN MUSEUM OF COMPARATIVE ZOOLOGY may account for the absence of sympatry between basiliscus and the other forms. In Costa Rica, plumifrons probably occupies the whole country. It has been observed on both coasts and in the inland, while vittatus has been found only on the Atlantic side in several locali- ties where plumifrons is also found. From northern Nicaragua to Mexico vittatus is found on both coasts and inland; the ex- treme north of its range seems to be Tamaulipas and Map 3. Distribution
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 20 BULLETIN MUSEUM OF COMPARATIVE ZOOLOGY may account for the absence of sympatry between basiliscus and the other forms. In Costa Rica, plumifrons probably occupies the whole country. It has been observed on both coasts and in the inland, while vittatus has been found only on the Atlantic side in several locali- ties where plumifrons is also found. From northern Nicaragua to Mexico vittatus is found on both coasts and inland; the ex- treme north of its range seems to be Tamaulipas and Map 3. Distribution of the species of Basiliscus (based on the speci- mens examined only). Southern Panama, Colombia, Ecuador and Vene- zuela. Circles = B. basiliscus basiliscus; solid circles = B. basiliscus bar- bouri; squares = B. galeritus. DISCUSSION From the morphological analysis it seems evident that the five species studied form two main groups: (1) vittatus with a northern distribution, and (2) all the other forms which together constitute a rather sharply set off southern group (see Fig. 8 and Table 1). These two groups, of course, have many charac- ters in common and differ in many others, but in four of the features studied they differ sharply and clearly enough to per- mit the distinction of every individual. These features are: the two scale patterns of the toes, the keeling of the abdominal. 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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