Hall. — Mesonephros iu Amphibia. 



PLATE 6. 



Cross-sections of Rana. 



Figs. 68-77. Ten consecutive sections through the Miillerian evaginations of the 

 right side of a larva 34 mm. long. The fundament is seen to be 

 resolvable into an anterior, questionable evagination (Fig. 68) and two 

 distinct ones (Figs. 74, 76). Figure 77 is on Plate 7. X 315. 



