0. The Quechua language as spoken in Ecuador is represented by approximately a million speakers located for the most part in the Andean highlands between one-half degree north and four degrees south latitude. A comparatively small scattering inhabit the central Eastern jungle area north and south of the Napo river. While considerable dialectal variation has been recorded for Ecuadorean Quechua, a subject to be treated in a later paper, the entire area may be considered one of mutual intelligibility. The present analysis is based on the speech of three individuals from the Canton of Colta in the Andean Province of Chimborazo, which lies approximately at the mid point between the two latitudinal lines indicated above. Although some dialectal variations occur in this specific area these are for the most part lexical. Phonological variations consist of the varied distribution of certain consonant allophones. Vowel variation in Spanish loans throughout the entire Ecuadorean Quechua area is correlated with degree of bilingualism of Quechua speakers.