The rock-paintings presented in Plates I and II are reduced copies of a record found by Dr. W. J. Hoffman, of the Bureau of Ethnology, in September, 1884, 12 miles west-northwest of the city of Santa Barbara, California. They are one-sixteenth original size. The locality is almost at the summit of the Santa Ynez range of mountains; the gray sandstone rock on which they are painted is about 30 feet high and projects from a ridge so as to form a very marked promontory extending into a narrow mountain cañon. At the base of the western side of this bowlder is a rounded cavity, measuring, on the inside, about 15 feet in width and 8 feet in height. The floor ascends rapidly toward the back of the cave, and the entrance is rather smaller in dimensions than the above measurements of the interior. About 40 yards west of this rock is a fine spring of water. One of the four old Indian trails leading northward across the mountains passes by this locality, and it is probable that this was one of the camping-places of the tribe which came south to trade, and that some of its members were the authors of the paintings. The three trails beside the one just mentioned cross the mountains at various points east of this, the most distant being about 15 miles. Other trails were known, but these four were most direct to the immediate vicinity of the Spanish settlement which sprang up shortly after the establishment of the Santa Barbara Mission in 1786. Pictographs (not now described) appear upon rocks found at or near the origin of all of the above-mentioned trails at the base of the mountains, with the exception of the one under consideration. The appearance and position of these pictographs appear to be connected with the several trails. The circles figured in _b_ and _d_ of Plate I, and _c_, _r_, and _w_ of Plate II, together with other similar circular marks bearing cross-lines upon the interior, were at first unintelligible, as their forms among various tribes have very different signification. The character in Plate I, above and projecting from _d_, resembles the human form, with curious lateral bands of black and white, alternately. Two similar characters appear, also, in Plate II, _a_, _b_. In _a_, the lines from the head would seem to indicate a superior rank or condition of the person depicted. [Illustration: BUREAU OF ETHNOLOGY FOURTH ANNUAL REPORT PL. I PICTOGRAPHS IN SANTA BARBARA COUNTY, CALIFORNIA.]