One specimen appears to have served a dual function as a tool. A portion of one edge is concave and the remainder convex, as on a typical side scraper. Both working margins display considerable wear. Examples illustrated by Rogers (1939, pl. 8, _h_, _k_) for the desert Playa industry differ in that they are consistently subrectangular, elongated, and have a broader concave scraping edge along each of two sides. _Thumbnail scrapers (fig. 3, b)._--Only a single specimen falls in this category. It is roughly circular in outline, thin, lenticular in cross section, and flaked on both surfaces. The example made of a dark-brown chert is 2 cm. in diameter and 4 mm. thick. The lone occurrence of this type of tool would seem to indicate a lack of emphasis on light delicate work. Implements of this nature are usually best associated with cultures of later origin. _Choppers_ _Unifaced choppers or heavy duty scrapers._--These are produced from large cores of basalt or from a split cobble and exhibit flaking only on one face. (Treganza and Malamud, 1950, pl. 20, _d-e_). _Bifaced choppers._--These are large cores bifacially flaked along an edge to effect a sharp, sinuous margin that may extend around the entire periphery or only a portion of it (_ibid._, pl. 20, _a-b_). _Crescentic Stone or "Amulet"_ This class is represented by but a half of a single specimen obtained during the second season (pl. 21, _m_). Though this specimen varies somewhat from illustrated examples there seems to be little doubt as to its general classification. The function of these implements remains open to question, and varient forms appear to have considerable latitude in time and areal distribution in western United States. Similar forms may be noted for the Lake Mohave Culture and the San Dieguito-Playa industry (Campbell _et al._, 1937. pl. XXXVIII, _a-c_; M. J. Rogers, 1939, pl. 8, _a-c_). _Drill or Reamer_ (Pl. 23, _d-e_) Two very similar pieces make up the addition to this class. Both are elongated, tapering sections of rose quartzite on which the margins have been retouched and the tip of each is notably abraded. The large ends show no evidence of preparation for hafting, so presumably they were used as a hand reamer or drill. The lengths are 6 cm. and 10 cm. _Hand Pick_ The two new specimens, roughly triangular in outline, resemble the single piece recovered in 1947. On both, the working end tapers to a heavy, well-formed point, whereas the opposite end is bulbous and fits comfortably into the palm of the hand. Lengths are 9.8 cm. and 13 cm., respectively, with basalt and quartzite as materials. _Projectile Points_