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 Prinia mistacea immutabilis van Someren Prinia mistacea immutabilis van Someren, 1920: 93 ( Nakuru Lake). Now Prinia subflava melanorhyncha (Jardine and Fraser, 1852) . See Watson et al., 1986a: 145 , and Urban et al., 1997: 222 . HOLOTYPE : AMNH 599914 , adult male, collected on the Nakuru Plains (as on label), on 15 May 1918 , by V.G.L. van Someren. From the Rothschld Collection. COMMENTS : In the original description, the type was said to be in the Rothschild Collection and to bear the above data; AMNH 599914 is the only van Someren specimen with these data. In his later paper, not in Ibis as stated in the description but in Novitates Zoologicae , van Someren (1922: 218) listed localities from which specimens of immutabilis had been obtained. Specimens from those localities collected before the publication of the name on 4 March 1920 are considered paratypes : East Africa : Simba , Fort Hall , Kyambu , Nairobi , and Kisumu ; Uganda : Jinja , Lugalambo , Kyetume , Entebbe , Bugoma , Toro , Chambura , and Masindi . The AMNH catalog numbers are: AMNH 599880–599892 , 599894–599897 , 599900 , 599904 , 599905 , 599907–599909 , 599916– 599918 , 599925 , 599929 , and 599930. Lake Nakuru is at ca. 00.21S , 36.05E ( Polhill, 1988 ) .