Excerpt from Bulletin of the Museum of Comparative Zo???logy at Harvard College, in Cambridge, 1945-1946, Vol. 96 In order to understand the morphological variation found in peru m'ana (sensu Boulenger) some knowledge Of the geographic conditions encountered by this snake in its wide range is necessary. The bulk Of the Peruvian and Bolivian specimens have come from'the Andean region from central Peru into Bolivia. Apparently they are primarily highland snakes for they occur at least as high as feet, and few have been taken ...
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Excerpt from Bulletin of the Museum of Comparative Zo???logy at Harvard College, in Cambridge, 1945-1946, Vol. 96 In order to understand the morphological variation found in peru m'ana (sensu Boulenger) some knowledge Of the geographic conditions encountered by this snake in its wide range is necessary. The bulk Of the Peruvian and Bolivian specimens have come from'the Andean region from central Peru into Bolivia. Apparently they are primarily highland snakes for they occur at least as high as feet, and few have been taken at low elevations. The lowest record on the west side of the Andes is meters (about feet); on the east side a few have worked their way farther down from the mountains and have reached at least the edge of the tropical lowlands. Specimens have been taken in the predominantly lowland department Of Madre de Dios in Peru and also from the city of Santa Cruz (elevation about 500 meters, feet) in Bolivia. Consequently many Of these snakes have encountered alpine conditions with a vegetation characterized by procumbent dwarf shrubs and low cushion or rosette-shaped plants; others, the more favorable and moist conditions found on descending the eastern side Of the mountains, where areas of grass steppes and scattered shrubs, savanna and evergreen woods, and tropical rain forest are encountered more or less in succession. Those from the western slopes of the Andes in this region have found little precipita tion due to prevailing south-easterly Winds. Thus the climate at the higher elevations is semiarid with a xerophytic vegetation Of cacti, low shrubs, and heath. Lower down, there is a belt Of desert crossed by fertile river valleys. This is complicated along the narrow coastal plain by a rich lomas vegetation dependant upon heavy fogs, but Tachymenis does not extend this low in Peru. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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