p.c. Raymond Boyd 2011
The Ngala language (a Zande-group language originally in the Central African Republic) discovered by Santandrea around 1950, is missing from E16/E17/E18/E19/E20/E21/E22/E23/E24 (see Santandrea, Stefano 1952 , data appears in Santandrea, Stefano 1965 ). It is, in fact, missing from all listings of African, Sudanese, or CAR languages and with only some 50 refugee speakers half a century ago, it is presumably extinct now. I wish to thank Raymond Boyd for discussion on the classification of this language.