According to Chapman et al. (1983) this species existed only from Salina Cruz, Oaxaca to the extreme west of the State of Chiapas, Mexico. Recently, Tehuantepec hares have not been found in Chiapas (Retana and Lorenzo 2002). The area occupied in the past was apparently 150 kmÂ², but increasing clearance for agriculture is destroying most of its habitat. The former distribution of the Tehuantepec jackrabbit is not documented in detail, but Nelson (1909) estimated the leporid's historic range along the Mexican Pacific Coast on the Isthmus of Tehuantepec from Salina Cruz in Oaxaca to TonalÃ¡ in Chiapas, as an area of perhaps only 5,000 kmÂ². Four populations of Tehuantepec hare persist, and the extent of occurrence is perhaps only 520 kmÂ². This hare inhabits altitudes at no more than 500 m.