EXPLANATION OF PLATE XV. 



Pigs. 1 and 2. Head of Typhlops nigrescens. 



„ 3 and i. Head of I'yphlops proximus. 

 Fig. 5. Tail of Typhlops nigrescens. 



„ 6. Tail of Typhlops rilppelli. 



[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.] 



