Lameen Souag, of Jabal al-Lughat, doesn’t post often, but when he does it’s always worth reading. His latest post is about the “Kouriya” language spoken near Timimoun, Algeria, described in Rachid Bouchemit’s 1951 article “Le Kouriya du Gourara”:
“Kouriya”, it turns out, was the general-purpose name given locally to any Black African language – “L’unité du terme cache la pluralité des idiomes: Haoussa, Bambra, Foullan, Mouchi, Songhai, Bornou, Boubou, Gouroungou, Minka, Sarnou, Nourma, Kanembou, Karkawi, etc…”, in particular as spoken by ex-slaves in the region. Following the abolition of slavery, these languages, no longer reinforced by the arrival of new slaves, rapidly fell into disuse; the new generation learned Arabic and Taznatit instead. By 1951, the author could find only seven or eight speakers of a “Kouriya” in Timimoun, and only two of them spoke the same language, namely Bambara.
John A. Holm’s Pidgins and Creoles: Volume 2, Reference Survey (Cambridge University Press, 1989) has a brief mention on p. 554: “Hancock (1977b: 387-389) points out some mixed African languages about which little is known except for their (former) existence and location. These include Kouriya, ‘a variety of mongrel Sudanese dialects . . . spoken by slaves and their descendants at Gourara near Touat.’” Lameen suggests it might derive from Songhay koyra ‘town, village’; other possibilities are mentioned in the comments.