_Otomaca._ _Piaroa._ _Guaraouna._ _Guahiba._ Man, andoua, ovo, guarao, pebi. Woman, ondoua, ysaho, { ibama, petiriba, C., { tira, pihaoua. Sun, noua, morho, hoke, { wameto, C., { icatia, isota. Moon, oura, chawa, guanica, oamito. Fire, noua, ocoura, hècouno, isoto. Water, ia, ahiia, ho, mera. Head, chû, { pemoto hocota, C., { ibun. Eye, chiahere, yto huto. Ear, cacoco, { pemohuyo roto, C., { nu tanipara. Mouth, chaha, doco, pinpierda. Nose, chihino, ca-icari, pepomuteito. Tongue, chame, peeberta. Tooth, chacou, ca-ycay, bono. Hand, chumu, ca-mahu, napi. Foot, chinepo, omu, petahu. House, hanouco, ta-habo (my). 1, enga, itchaca, cahene. 2, dé, manamo, nawanube. 3, yakia, dianamo, acueyani. 4, depitade, urabocaya, penaya autsiva. 5, ionga pinibo, uabachi, cahecobe. The above four _lengue matrice_ were among the most important on the Orinoco. The Guaraouna or Warrau was, and continues to be, spoken by the tribes of the delta, who are numerous and intelligent, when they have a fair chance to live undisturbed. Of the Otomaca only the merest fragments have been published, and my vocabulary is nearly empty. Several recent travelers have brought back information about the Piaroa and Guahiba, some of which may be found in the eighth volume of the _Bibliothèque Linguistique Américaine_ (Paris, 1882), with observations by M. Adam. C. refers to Chaffanjon. LANGUAGES OF THE ORINOCO BASIN.--(_Continued._)