NO. 4 SAN JON DISTRICT, NEW MEXICO ROBERTS II 



tions, however, they occur just below the present sod line or, as in 

 the case of those from the terrace in the brakes where there is no 

 grass, are from 2 inches (5.1 cm.) to 4 inches (10.2 cm.) beneath 

 the surface in the upper part of an ash- and charcoal-stained deposit 

 underlying a layer of sterile sand. Curiously enough none of these 

 seems to belong to any of the types identified as characteristic of the 

 Apache, Wichita, Jumano, or Panhandle groups (Sayles, 1935) that 

 might be expected to have left a few points in the region. 



The triangular form with broad, expanding tang with convex base 

 (pi. 4, a) appears sporadically over most of the southern plains, is 

 occasionally seen in collections from the northern plains, occurs in 

 some eastern Pueblo ruins, and may be found in sites east of the 

 Mississippi River. It apparently does not occur in large numbers 

 in any one locality and has not been correlated with any particular 

 horizon or specific cultural group, but it undoubtedly is a relatively 

 late type. 



The same is true for the group with a longer, expanding tang and 

 more rounding base (pi. 4, c). A comparable point is reported from 

 a rock shelter in the southern escarpment of the Staked Plains in 

 Winkler County, Tex., some 220 miles (354.1 km.) southeast from 

 the San Jon site (Holden, 1938, pi. 28, No. 10). There the asso- 

 ciation included potsherds, some of Pueblo origin, other types of 

 projectile points, knives, scrapers, drills, bone and shell artifacts. 

 The culture represented is considered to be non-Puebloan, many of 

 the points and artifacts seem to be Sayles' Wichita and Jumano types 

 although other groups are also included, and evidently does not belong 

 in an early category. 



The triangular point with slightly convex and serrated edges, 

 medium tang and concave base (pi. 4, b) suggests some of the Texas 

 forms from the Edwards Plateau section, might possibly be derived 

 from some of the bifurcated-base types found there, and also has 

 a resemblance to examples occurring sporadically in the eastern 

 periphery of the Pueblo area, yet it does not appear to have definite 

 affinities with established cultural phases. Perhaps, like the others, 

 it represents a minor type that had a rather widespread distribution 

 and as far as present knowledge goes is without any particular 

 significance. 



The last in the group (pi. 4, d) is a type in which the basal portion 

 constitutes a much larger proportion of the blade than is usually the 

 case. The tip end is triangular in shape, while the section below the 

 side notches is roughly rectangular with a deeply concave base. 



