Plate IV. 

 Fig. 8. Same, from below. 



Fig. 9. Double eye of older diprosopic pig fetus, Teras XII. from above; 

 superficial aspect. 



Fig. 10. Same, from above, deeper aspect. 

 Fig. 11. Same, from below; superficial aspect. 

 Fig. 12. Same, from i)olow ; deeper aspect. 



