(Chupunes, Tarquines, Ompines, Julpunes ... 3,000) __________________________________________________ Adding the totals for the tribes known to inhabit the delta region of the great rivers and the southern shore of Suisun Bay, we arrive at a total population of 9,350. Delta area ... 9,350 ____________________ It is now preferable to depart from a strictly tribal sequence and revert once more to a classification based upon river basins. Three areas of this type are sufficiently clearly marked out; those corresponding to (1) the Cosumnes River, (2) the Mokelumne River, and (3) the lower San Joaquin River from just below the Merced to the head of tide water near Manteca. The inhabitants may be designated village or tribal groups in accordance with the river system where they were located. _The Cosumnes group._--On the river of this name lived the large and important aggregate of peoples known popularly as the Cosumnes, which included a restricted tribelet or subgroup also called Cosumnes. Ethnically a portion of the Plains Miwok, they extended from Sloughhouse close to the foothills, along the lower course of the Cosumnes River to its confluence with the Mokelumne near Thornton, and from that point northwestward to the Sacramento. The tribe as a whole was divided into either villages or tribelets, the names of many of which have come down to us from the Spanish records or have been ascertained by informants from ethnographers. As might be expected, there is considerable confusion among the different sets of names. The mission documents are replete with village and tribal names but the number of baptisms was not as large as might be anticipated from what must have been a very populous aggregate of natives. The reason probably lies in the fact that missionizing expeditions to the Cosumnes were preceded by exploratory and punitive expeditions which, to be sure, brought home a few converts but which were chiefly preoccupied with military objectives. The Cosumnes, together with the Mokelumnes and other peoples of the lower San Joaquin Valley, had the time and the opportunity to develop great facility in the raiding and stealing of livestock and consequently for many years were in a state of uninterrupted war with the coastal settlers. The bitter hostility thus generated, together with the aggressive psychology which accompanied successful physical opposition to the Spaniards, made extensive conversion to Christianity very difficult. As a result the relative proportion of the natives baptized was unquestionably much lower than among the bay and delta tribes previously considered. The baptisms which appear in the mission records follow. Tribe or Group Date of Conversion Baptisms ______________ __________________ ________