, 100 for the Yotiya, making 1,480 in all. This is somewhat, but
not excessively, greater than Stewart's estimate.

For the Central Pomo as a whole we may turn once more to the record
left by Heintzelman. For the area here being considered he lists five
tribes.

1. _Uk-a-is._ These are stated to be located "above the canyon of
the Russian River," and are obviously the villages grouped around
Ukiah. A discussion of the Yokaia is given by Stewart (1943, pp.
43-45).

2. _Sinals._ This term clearly refers to the village of Shanel,
already mentioned with respect to population.

3. _Bo-kas._ These were located "in the vicinity of Fort Ross" and
included no doubt the Bokeya of Point Arena as well as the
survivors around Fort Ross.

4. _Ta-bi-tas._ These were "in Anderson's Valley" and refer to the
inhabitants of the village Tabate (Kroeber and Stewart) or to the
group called the Pdateya by Stewart.

5. _Bo-i-os._ These were located "south of Booldam River on the
coast," in other words south of Big River near the boundary between
the Northern and Central Pomo.

Since the region of Ukiah, Hopland, Booneville, Point Arena, and Fort
Ross was well explored and even extensively settled by 1855, it is
entirely probable that Heintzelman recorded all the existing natives of
the area. Regardless of terminology the five names above leave no
important fraction of the territory unaccounted for. Heintzelman's
total for the population is 2,100, a figure which should be compared
with the value of 6,220 obtained through the use of village lists,
together with house and family number.

For the Athapascan and Yukian peoples, as well as for the Northern
Pomo, a marked correspondence could be observed between the two sets of
data, even though entire identity could not be achieved. For the
Central Pomo, on the other hand, there is a striking disparity: the
Heintzelman estimate reaches only one-third the value obtained from
ethnographic sources. Since Heintzelman could reach his maximum
accuracy among the relatively well known Central Pomo, as opposed to
the remoter northern groups, we cannot ascribe his low count to
ignorance or carelessness on his part. The most reasonable explanation
is that the Central Pomo had already by 1855 suffered a reduction in
population of from one-half to two-thirds of the aboriginal level. Such
an hypothesis is entirely consistent with all we know of