396 NOTES AND EXHIBITS. 



A few measures will, I believe, not appear quite useless. 



Length from the ophrion to the occip. point, above the occip. 

 protuberance, 187 mm. 



Length from the ophrion to the occip. protub., 192 mm. 



Interparietal breadth, 125 mm. 



Frontal breadth (between the temporal crests of the frontal 

 bone), 102 mm. 



Thickness of the bone between the external and internal 

 occipital protuberance, 21 mm. 



Breadth index, 66.8. 



Height index, 73.2. 



EXPLANATION OF PLATE 18. 



Fig. 1 — Occipital bone of an Australian aboriginal from the 

 Lachlan district, from behind and a little below, showing the 

 prominent curved crest, and the not very pronounced inferior 

 curved lines. (Nat. size.) 



Fig. 2. — The same bone from the side showing the occipital 

 protuberance, the curved crest and three ossa triquetra in the 

 lambdoiclal suture. 



Fig. 3. — Diagrammatic median section of the same bone made 

 with the help of band of lead (lame de plomb of Dr. Marce.) 



c. c. — Curved crest. m. p. — Mastoid process. 



0# l — Inferior curved lines. p. — Parietal bone. 



p. — Occipital protuberance. o. — Occipital bone. 



f. m. — Foramen magnum. f. — Temporal bone. 



o. f. — Ossa triquetra. 



NOTES AND EXHIBITS. 



Professor Stephens exhibited a living example and photographs 

 of the remarkable New Zealand Hatteria ( Sphenodon, or Rhynch- 

 osaurus) punctata, brought to Sydney by W. Knight, Esq., from 

 Karewa Island, Bay of Islands, 6 miles from Tauranga. Here 

 this lizard lives in association with the Mutton birds, whatever 

 these may be, in great numbers. Whether this association is 

 based upon pure friendship may be doubtful. The affinities of 



