Type Specimens Of Birds In The American Museum Of Natural History. Part 7. Passeriformes: Sylviidae, Muscicapidae, Platysteiridae, Maluridae, Acanthizidae, Monarchidae, Rhipiduridae, And Petroicidae Author LeCroy, M. text Bulletin of the American Museum of Natural History 2008 2008-07-02 313 1 1 287 http://dx.doi.org/10.1206/313.1 journal article 10.1206/313.1 0003-0090 13223808 Bias musicus pallidiventris van Someren Bias musicus pallidiventris van Someren, 1921: 102 (Canhoca, Angola ). Now Bias musicus musicus (Vieillot, 1818) . See Urban et al., 1997: 551 , and Dean, 2000: 255 . HOLOTYPE : AMNH 649708 , adult female, collected at Canhoca, 09.15S , 14.41E ( Dean, 2000: 372), Angola , on 23 November 1903 , by W.J. Ansorge (no. 1231 (1331)). From the Rothschild Collection. COMMENTS : In the original description, van Someren cited the number ‘‘1331’’ for the holotype . Both numbers ‘‘1231’’ and ‘‘1331’’ appear on Ansorge’s label. The number ‘‘1231’’ is the number given by Ansorge, and I think ‘‘1331’’ may have been added by Hartert because of a typographical error in the published number. The number ‘‘1331’’ also appears on the Rothschild type label. The Rothschild Museum label has ‘‘Type’’ written on the reverse, probably by van Someren. Six females were said by van Someren to have been compared. Of the five female paratypes , four are in AMNH: AMNH 649709 (van Someren no. 1179), 649710 (1101), 649711 (1165), and 649712 (1217), all collected at Canhoca in November 1903 . Two male specimens from Canhoca, collected on 29 December 1903 , would also been in van Someren’s hands when the description was published and are here considered paratypes : AMNH 649706 (1603) and 649707 (1323).