. Bulletin of the British Museum (Natural History) Zoology. 196 R. Fig. 16 Lagowskiella czekanowskii, lateral views (23-60 mm SL; BMNH : 820-1045). Material. FS 1, : 1046-1047 (42 & 49 mm); FS 2, : 1048-1053 (52-65 mm; 1 ex. double stained). Total 8 specimens*. Variation. Conform to the concept of a 'dwarf form' of Oreoleuciscus potanini as described by Borisovets et al. (1984 & 1985, and see Shatunovskii, 1985). Geographical range. Isolated water bodies of the Gobi Valley, Mongolia. Ecological notes. These specimens were caught along the shore of
. Bulletin of the British Museum (Natural History) Zoology. 196 R. Fig. 16 Lagowskiella czekanowskii, lateral views (23-60 mm SL; BMNH : 820-1045). Material. FS 1, : 1046-1047 (42 & 49 mm); FS 2, : 1048-1053 (52-65 mm; 1 ex. double stained). Total 8 specimens*. Variation. Conform to the concept of a 'dwarf form' of Oreoleuciscus potanini as described by Borisovets et al. (1984 & 1985, and see Shatunovskii, 1985). Geographical range. Isolated water bodies of the Gobi Valley, Mongolia. Ecological notes. These specimens were caught along the shore of Biger Nuur. This small endorheic lake lies several hundred kilometres apart from other water bodies in the western region of the Gobi Valley system and is prone to periodic dessication. * This form' of previously unrepresented in collection of BMNH. Taxonomic discussion. Superficially these small fishes re- semble Phoxinus, however, osteological analysis revealed that their long head, nasals and jaws, depressed cranium, somewhat divergent infraorbital canal, well developed supra- neurals and exceedingly small scales, all clearly distinguish these taxa. These features are more typical of Oreoleuciscus and to some extent Lagowskiella as well (see below p. 197 and Howes, 1985), although, my specimens can be distin- guished from this genus by a higher number of gill-rakers (12- 15) and wider bucco-pharyngeal opening. The striking simi- larity between the 'dwarf form' of Oreoleuciscus potanini and Lagowskiella ( see below p. 197) ques- tions the proposed sister group relationship between this genus and the aspinine cyprinids generally as suggested by Howes (1984). At the present time Oreoleuciscus and Lagowskiella are. 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
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