Similarly related to Tonga and Subia are the _Ila_ (Shukulumbwe) and _Lenje_ tongues, though both lie almost or wholly outside the limits of Barotseland, in the central part of Northern Rhodesia. The Ba-ila tribes, two divisions of which are also known as the _Ba-lumbu_ and _Ba-shala_, are a splendid-looking folk in physical development, who were long recalcitrant to European influence. In fact their healthy plateau country has only been opened up to knowledge during the last twenty years. When they were first seen in the latter part of the nineteenth century they were found to be—the men especially—living in a state of complete nudity, except in the case of the married women. But to make up for the complete neglect of clothing the men devoted particular attention to their head-hair. This was pulled up, greased, lengthened by the insertion of ancestral hair pullings, and fastened to a supple arched, recurved whip, so that it rose a foot to two feet above the occiput. Nowadays I imagine that their complete nudity is modified. The mining surveys, motor roads, and suggestions of railways, together with good and wise government, in and out of the Barotse kingdom, have succeeded in taming the Ba-ila and in drawing them into paid employment; though it is still feared by watchful administrators that they tend to diminish owing to sexual vice which causes the women to become infertile. Another language of interest and importance is that of the _Nkoya_ and _Mbwela_ tribes living in East Barotseland. It has affinities jointly to the Luyi Group and to that of the North-West Zambezia languages. Preprefixes are not used, but the seventeen prefixes-with-concords seem to be fully represented in primitive forms, except that the seventh prefix (_Ki_-) is represented by _Shi_-, which brings it near to the _Si_- of Luyi. The tenth prefix is lisped as _Thi_-, _Thin_-, &c., a feature reappearing in one or two other tongues of the Group. The eighth prefix is _Bi_- and the locative prefix is _Pa_-. The root for ‘two,’ in the numerals is the East and South Africa form, -_bidi_ or -_biji_ (for -_bili_); not the -_bali_ root that obtains in the other members of the North-West Zambezian Group. Another peculiarity that signalizes Nkoya is the root -_mwa_- for ‘all,’ only to be met with elsewhere in two of the Manyema languages of East Congoland. In Nkoya there is none of that dislike to the consonant _p_, which recurs over and over again in Bantu Africa. But in the other members of the North-West Zambezia Group this obtains, and in these—Luena, Mbunda, Lujazi and Chokwe—the 16th prefix is given as _Ha_- or _A_- instead of _Pa_-. Otherwise they are fairly orthodox, betraying little more “West African” affinities than the use of the -_bali_ root for ‘two’ (instead of -_bili_), which is a characteristic of West Central Africa.