686 SECOND NOTE ON " MACRODONTISM" OP THE MELANESIANS. 



EXPLANATION OF PLATE XLIX. 



(All the figures, with exception of Fig. 9 and Fig. 10, of natural size.) 



Fig. 1-Fig. 4.— Crust of tartar of two upper incisors. The external surfaces 

 dark brown, smooth as if polished. 



Fig. 1. — The same from the front. 



Fig, 2. — The same from behind. 



Fig. 3.— The same from the side. 



Fig. 4, — The same from above, showing distinctly that the crust has been 

 covering two incisors. 



Fig. 5, Fig. 8. — One of the upper incisors, covered with a dark brown 

 crust of tartar, leaving only a portion of the fang (f) free. 



Fig. 5. — The same from the front. 



Fig. 6. — The same from behind. 



Fig. 7- — The same from the side. 



Fig. 8. — The same from below, showing two smooth surfaces. 



Fig. 9. — Half-opened mouth in profile of Burumo, a native of the Island 

 Sorry' in Nares Harbour, showing very large salivary calculi 

 covering the incisors. (About one-half of the natural size.) 



Fig. 10. — Mouth of the same, en face. 



Fig. 11. — Upper surface of the crust of tartar, enclosing the middle incisors 

 ot the upper jaw. Exact measures in millimeters. 



Fig. 12. Upper surface of the crust of tartar covering the lower incisors. 

 The exact measures are marked in millimeters. The thickness of 

 the larger calculus was exactly 8 mm. Tlie upper outlines of the 

 teeth were covered with detritus of food, Leptothrix huccalis, <i;c. 



