EXPLANATION OF PLATE XV. 
Figs. 1 and 2. Head of Typhlops nigrescens. 
„ 3 and 4. Head of Typhlops proximus. 
Fig. 5. Tail of Typhlops nigrescens. 
„ 6. Tail of Typhlops ruppelli. 
[The figures, whioh are four times natural size, have been reproduced 
from drawings by Mr. Edgar E. Waite, of the Australian Museum, by 
photo-lithography.] 
