PLATE 10 



EXPLANATION OF FIGURES 



75 to 77 A series of three sections from specimen No. 170; all X 75. 



75 Taken through plane e to /, figure 4. 



76 Taken through plane c to d, figure 4. 



77 Taken through plane a to b, figure 4. 



78 Transverse section through the middle of one of the embryos from specimen 

 No. 276 (fig. 5). 



79 Litter of four embryos attached to the placentae of the chorion, which has 

 been cut open on the ventral side. The paired arrangement of the embryos is very 

 clearly shown. X 3. 



680 



