DESCRIPTIONS OF THE PLATES BONE IMPLEMENTS, ETC. [B. XXIX.] 179 



Fig. 6. A fragment retaining nine close-set, alternate, long, grooved barbs or their 

 roots. The stem has continuous or broken grooves along the bases of the barbs. 

 From La Madelaine. 



Fig. 7. The butt of a broken specimen, retaining two sharp, grooved barbs, and 

 marked with some short oblique grooves. 

 From La Madelaine. 



Figs. 32-34. 



Three bone Harpoon-heads from Tierra del Fucgo, obtained during the Voyage of the 'Beagle' in 1827. 



(Christy Collection.) 



Fig. 32. 8f inches long. Fig. 33. 15 inches long. Fig. 34. 12^ inches long. 





