This officer listed eight names which can be indentified as falling within the group being discussed. They are as follows.
1. Si-dam. This is sedam of Barrett (1908, p. 141) and of Stewart (1943, p. 41), located in Potter Valley.
2. Po-ma Pomes. This is pomo of Barrett and Stewart, likewise in Potter Valley.
3. Kal-il-na-pomas. This group was located between Martoo (Sherwood) and Metumki (Little Lake) valleys and is possibly equivalent to kalal-nokca, a village below Ukiah (Barrett, personal communication). However the habitat specified by Heintzelman does not support Barrett's surmise. The group undoubtedly lived much to the north of Ukiah.
4. She-bal-na-pomas. These were in Sherwood Valley and are referred to by Barrett (1908, p. 147, fn.) as the Shi-bal-ni Pomo.
5. Calli-tal-pomas. Dr. Barrett is unable to identify the name but the people lived in the same vicinity as the tribes mentioned previously. It is possible that they may have been the kabelal of Stewart (1943. p. 39).
6. Yo-pomas. Dr. Barrett thinks (personal communication) that this term may signify Yo kai pomo ("south valley people") who would have lived near Ukiah. But Heintzelman states that they lived between Kinomo (Round) Valley and Martoo (Sherwood) Valley, and hence must have been Northern Pomo.
7. Maa-to-ma-pomas. With regard to these people Dr. Barrett writes me as follows: "Possibly refers to Little Lake or Willits Valley people mtomkai, or bitomkai (1908, p. 128, fn.), or to mitoma, on a knoll in the town of Willits (ibid., p. 145)." The latter hypothesis appears the more probable (Stewart, 1943, p. 36 ff., discusses this subtribe at length). Heintzelman adds the information that the Maa-to-ma-pomas are divided into seven tribes, of which the Sho-he-shas are the most numerous. Barrett (1908, p. 146, fn.) thinks that the latter people are the Chow-e-chak of M'Kee. Heintzelman further says that the territory covered extends from Metumki (Little Lake) Valley to the coast.
8. So-as. Barrett considers (personal communication) that this name refers to the village of sosa-tca, in Sherwood Valley (cf. 1908, p. 147).
Irrespective of conflicts in terminology it appears that Heintzelman fairly well covered the area usually assigned to the Northern Pomo under the eight designations just listed. His total population value is 5,350, slightly greater than but very close to the estimate derived from ethnographic data (i.e., 5,040). This close correspondence will be seen as specially significant when we come to examine his report on the Central and Southern Pomo.