A STUDY OF PRIMITIVE MONEY. 



321 



Indian tribes. If tbey are questioned respecting these shells, they an- 

 swer that they were brought from the sea." 



It had but a limited use among the west-coast Indians, if we may 

 judge by the rarity of its occurrence in old graves. Of the small num- 

 ber of specimens in the National Museum named in the foot-note* 

 nearly all belong to a. different species of Dentalium, namely, D. hex- 

 agonarn, and it is not certain that such examples as do not belong to 

 this species should be regarded as the same as the northern form. D. 

 hexagonum, though a smaller, slenderer, and more delicate shell, and in 

 these respects less desirable through being less serviceable than D. in- 

 dianorum, is fully as abundant along the coast in the region around 

 San Diego as D. indianorum is in the Puget Sound region. 



HAWOCK OR HA-WOK. 



Powers expresses the opinion " that the staple currency of all the 

 tribes in central and southern California is made from the same mate- 



Fig. 10. 



TlVELA CRASSATELLOIDES.t 

 (Southern coast, of California. From specimen it 



* San Miguel Island: D. hexagonum and perhaps D. indianorum on same string. 

 [29144.] San Luis Obispo: Fragments of both of above, or possibly (artificially 

 shortened and strung) beads, mixed. [21773.] 



+ = Pachydesma crassatelloides. 



H. Mis. 600, pt. 2 21 



