EXPLAXATIOX OF TLATE V. 



FIGURES. 



1. Xotorycfefi fyphJopn. Skeleton [uaf. 4zf). For convenience the append- 



ages of one side only are represented. 



e, first rib. 



/, keel of presternum. 



I, spinous process of eighth vertebra. 



m.s.s., mesoscapular segment of scapula. 



J), patella. 

 The dotted line running along the spine marks the extent of the 

 nuchal muscles. 



2. Axial skeleton {nat. s^ze). 



a, atlas. 



ac, acetabulum. 



c, fused cervical vertebra? {II. — VI.). 



e, first rib. 



/, presternum. 



t, transverse processes of lumbar vertebrae. 



•s.p, symphysis pubis. 



y, chevron bones of caudal vertebrfe. 



3. Ventral view of posterior part of abdomen of first specimen received, 



showing indication of pouch m. 



