b. The Uchitee, or Utshi. Extinct.

c. The Aripe. Probably extinct.

d. The Layamon of Loretto, known to us by a vocabulary.

3. The Pericu.—Probably extinct. Spoken at the southern extremity of the island from N.L. 24°, to Cape St. Lucas.

4(?). The Ikas.—By the unknown author of the "Nachrichten von der Amerikanischen Halbinsel Kalifornien" (Mannheim, 1773), who was a Jesuit missionary in the Peninsula, the Ikas, a fourth family, is enumerated amongst the Old Californians.

5(?). The Picos, too, or Ficos, of Bägert, may possibly represent a separate family. More probably, however, they are Ikas, or sections of some better known division of the Old Californian population.

If we now take a review of what has been investigated, it is only a coast and a peninsula. What, however, is the state of the interior of that great tract which, politically, lies between Mexico, the United States, and the Pacific, and of which we have the ethnological limits in the areas of the Tototune, the Shasti, the Palaiks, the Paducas, and lastly the Indians of Sonora—for thus far south must we go before we get clear of the terra incognita of California?

I am better prepared with suggestions as to the method of investigating these parts than with facts concerning them.

1. In the way of physical geography it is convenient to draw a distinction. The great interior basin (or table-land) of California is one division; the great triangular watershed between the rivers Gila and Colorado another.