234 BUREAU OF AMERICAN ETHlSrOLOGY [Bull. 193 



zuela. In each of these cases, the design elements shared are sufficiently 

 specific yet uncommon enough in general South American archeology 

 to suggest diffusion. How this diffusion took place, if in fact it did, 

 without leaving more evidence in the intervening areas, is a question 

 which has yet to be answered. For the present, it is noteworthy that 

 within the intervening area the Sinu River valley is about the only 

 region which has been subjected to intensive archeological sm-vey. 

 With the exception of some coastal sites and a few others along 

 Balboa's probable route, most of Darien is archeologically unknown. 

 It is possible that further work in this region would produce corrobora- 

 tive evidence of an East- West diffusion such as that postulated above. 



