. Bulletin of the British Museum (Natural History) Zoology. 176 R. A. TRAVERS. Fig. 3 Principal collecting localities; (Above) Tuul Gol, 5 km north of Lun and (Below) Tamir Gol, 2-3 km upstream from confluence with upper reaches of Orkhon Gol. catchment area of 323,000 km2 or of the whole country (Dulma, 1979). The Bulgan River system drains the southern slopes of the Altai mountain range. It is separated from the other part of the Mongolian Arctic basin by the western Gobi valley. These waters support a fauna that is almost indistinguishable, al- though the Bulgan River now empties into
. Bulletin of the British Museum (Natural History) Zoology. 176 R. A. TRAVERS. Fig. 3 Principal collecting localities; (Above) Tuul Gol, 5 km north of Lun and (Below) Tamir Gol, 2-3 km upstream from confluence with upper reaches of Orkhon Gol. catchment area of 323,000 km2 or of the whole country (Dulma, 1979). The Bulgan River system drains the southern slopes of the Altai mountain range. It is separated from the other part of the Mongolian Arctic basin by the western Gobi valley. These waters support a fauna that is almost indistinguishable, al- though the Bulgan River now empties into Lake Ulungur Province (People's Republic of China) which has no outlet and is an enclosed system (endorheic). The isolation of this system may have occurred during uplift of the Altai mountain range which divided the Central Asian basin (discussed below). The Shishlid River system is a relatively short headwater of the Yenisei River and occupies the most northern tip of Mongolia, just west of Khbsugul Nuur. The Selenga River system is the largest in the Mongolian Arctic basin; it encompasses of the basin, has a drainage area in excess of 280,000 km2, a total length of about 1,500 km and supplies 50% of the affluent of Lake Baikal (Kozhov, 1963). The Selenga's tributaries consist of many large rivers and lakes ( Terilg, Tuul, Orkhon & Tamir Gols and Khbsugul, Terhiyn and Ugiy Nuurs). It is the prin- cipal headwater of the Yenesei River which courses across Siberia before eventually emptying into the Arctic 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 Farn, Alexander E. London : Butterworths
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