A REVIEW OF THE EEL-LOACHES OF THE GENUS PANGIO (TELEOSTEI, COBITIDAE) FROM THE MALAY PENINSULA, WITH DESCRIPTIONS OF 6 NEW SPECIES

Ten species of Pangio occur in the Malay Peninsula: P. anguillaris, P. cuneovirgata, P. doriae, P. kuhlii, P. malayana, P. oblonga, P. shelf ordii, and the new species P. alcoides, P. filinaris, and P. piperata. Pangio alcoides is distinguished by a high vertebral count, a very sm all eye, and a peculiar colour pattern (usually white belly and black dorsum); P. filinaris by a plain brown body and a nasal barbel, P. pip erata (which also occurs in Sumatra) by a brown body with fine black d ots forming small blotches along dorsal midline and a relatively low v ertebral count. Three additional new species are described from Borneo : P. alternans from the Mahakam basin, Borneo, is distinguished by its colour pattern of alternating blotches on lower half of body and bars and by its low vertebral count; P. incognito (which occurs syntopical ly with P. shelfordii in Sarawak) by a low vertebral count and details of coloration; P. pulla from Kalimantan Tengah, Borneo, by the absenc e of pelvic fins, its colour pattern consisting of broad black bars an d narrow interspaces, and a high vertebral count. Pangio malayana and P. myersi (from southeastern Thailand) are removed from the synonymy o f P. kuhlii and considered valid species; P. muraeniformis is consider ed a synonym of P. shelfordii; P. borneensis is possibly a senior syno nym of P. shelfordii but its status cannot be solved without new colle ctions. Pangio shelfordii, P. cuneovirgata, P. doriae and P. superba a re recorded for the first time from Sumatra. Neotypes are designated f or Acanthophthalmus fasciatus Bleeker, 1860, Cobitis oblonga Valencien nes, 1846, and A. javanicus Bleeker, 1860.