45 



In the 77 mm. embryo the sole is uniformly granular, 

 but at 92 mm. hair has clothed a large area of the plantar 

 surface of the pes and of digit-s 2 and 3 (see figs. 10 and 11). 



HF; 



t^mm 



II Hi 



Fig. 9. 



Palmar surface of the 



left manus (from 



Specimen Male A, 



Perth). 



Fig. 10. 



Plantar surface of the 

 left pes (from Speci- 

 men Male A, Perth). 



?S\i 





6'i 



Fig. 11. 



Plantar surface of the 



left pes (from Speci- 

 men Male B, Perth). 



External genitalia. — The genital tubercle of the male is 

 extra-cloacal at the 17 mm. stage, and intra-cloacal at the 

 77 mm. stage. The opening of the pouch in the female is 

 directed downwards and backwards. 



