138 



1 9 



ZOOLOGY. 



aperture, which in the absence of a tail comes to be slightly 

 dorsal in position instead of ventral. The limbs show a 

 general resemblance to those of the rabbit, but the fore- 



Fig. 66. TRANSVERSE SECTION, ANTERIOR PART OF FBOO- 

 (After Howes.) 



Fig. 67. TRANSVERSE SECTION, POSTERIOR PART OF FROO. 

 (After Howes.) 



limb has only four toes, the hind one five ; the latter has 

 an elongated tarsus and no projecting heel, and its toes are 

 webbed. 



2. Transverse Sections. The general structure of the 

 body, as shown in transverse sections (figs. 66 and 67), is 



