PLATE LXVI. 



Class MAMMALIA continued. 

 THE BABBIT continued. 



FIG. 1. SECOND LUMBAR VERTEBRA : FRONT VIEW, x 1. 



c. centrum : s. spinous process : t. transverse process : m. metapo- 

 physis : li. hypapophysis. 



FIG. 2. FIRST CERVICAL VERTEBRA OR ATLAS : FRONT VIEW, x 1. 



/. articular facet for the condyle of the skull : t. transverse process. 



FIG. 3. SECOND CERVICAL VERTEBRA OR Axis: FRONT VIEW, x 1. 



o. odontoid process : /. vertebrarterial canal : p. z. posterior 

 zygapophysis. 



FIG. 4. FIRST AND SECOND CERVICAL VERTEBRA : SIDE VIEW, x 1. 

 a. 1 atlas: a. 2 axis. 



FIG. 5. SECOND LUMBAR VERTEBRA : SIDE VIEW, x 1. 



s. spinous process : t. transverse process : m. metapophysis : z. 

 posterior zygapophysis : a. anapophysis : h. hypapophysis. 



FIG. 6. STERNUM : FRONT VIEW, x 1. 



s. 1 first sternebra or manubrium : s. 6 sixth sternebra: x. xiphoid 

 cartilage. 



FIG. 7. SKULL : DORSAL VIEW, x 1. 



s.o. supra-occipital : i. interparietal : p. parietal : /. frontal : n. nasal : 

 p. premaxilla : z. zygomatic arch. 



FIG. 8. BASE OF THE SKULL, x 1. 



/. m. foramen magnum : s.o. supra-occipital : o. c. occipital condyle : 

 t. tympanic bulla : b.o. basi-occipital : b.s. basi-sphenoid : 

 pt. pterygoid : a.s. ali-sphenoid : g. glenoid fossa : p. palatine : 

 p.p. palatine process of the maxilla: m. maxilla: p.m. 

 premaxilla. 



FIG. 9. SKULL: SIDE VIEW, x 1. 



s.o. supra-occipital : p.o. par-occipital process : t. tympanic bulla : 

 s. squamosal : pt. pterygoid : a.s. ali-sphenoid : o. optic 

 foramen: z. 1 ,^. 2 malar (jugal) and squamosal portions of 

 the zygomatic arch : /. frontal : I. lachrymal : m. maxilla : 

 p.m. premaxilla : n. nasal. 



FIG. 10. LOWER JAW: SIDE VIEW, x 1. 



r. ramus : a. angle : c. condyle : c. *p. coronoid process. 



FIGS. 11 and 12. HYOID : SIDE AND FRONT VIEWS, x 1 

 &, body: c. 1 ,*:. 2 anterior and posterior cornua. 



