Pearson 1983 Octodon sp. Dec.5, Bariloko, mixed Christie tells shell COC 061 to the British Museum and confuses it "cotype" and "style lectotype" of O. bridgesi. Style lectotype tail is almost all dark, only bands on basal 1/3rd. Tail is long-haired, spemalled, but not tufted. Tail bone of top color 14mm long. Tail "vertebrae" in prepared skin were 137mm long. In the cotype, bones of top were 9mm. long, tail 12-8mm. The bridgesi tail was much hairier than ours. Shell: our 061 In the cotype of bridgesi, the plane of modus slopes backward and the bulged is about equal to the top of the conch. In the lectotype, the modus doesn't slope backward and the bulges are about 2/3 top of conch. Both lectotypes shell length 47+mm. Shell more elongate, heavier than ours COC 061. Another BMNH specimen, ♀ 4.1.7/2 13 from Punta Alta had measurements 183 x 134 x 39 x 30. Other from the same place looked like leucurus. Our no. L AR 063 sits same as 061. Style last left coc lower molar = molars left 4th = Post petal indentations of ours = '' u '' bridgesi