E16/E17/E18/E19 has a Southwestern Nisu [nsv] as well as a Southern Nisu [nsd] said to be spoken in the same (or more) locations and with the same dialect names. The map shows S Nisu [nsd] to be spoken in the region described for both (Pu'er subprefecture), whereas SW Nisu is put much further southwest in Xishuangbanna (Dai) Prefecture. SW Nisu, as a distinct variety spoken in Pu'er or in Xishuangbanna prefecture, is not taken up in Nisu dialect surveys ( Chan, Ken and Bai Bibo and Yang Liujin 2008 , Yang, Cathryn 2009 ). The SW Nisu entry is therefore probably spurious, or seriously confused. See also: Southern Nisu [nsd].