lyon] 



THE HARES AND THEIR ALLIES 



385 



J'crtcbral Column 



Transverse process of the seventh Transverse process of the seventh 



cervical not pierced by a vertebral cervical pierced by a vertebral fora- 

 foramen. men. 



Thoracic vertebn-e seventeen in 

 number. 



Thoraco-lumbar vertebrae twenty- 

 two in number. 



Spinous processes of thoracic verte- 

 brae relatively short. 



Spinous processes of lumbar ver- 

 tebras relatively low. 



Transverse processes of lumbar 

 vertebrce very short and wide. 



No hypophyses on any of the lum- 

 bar vertebrae. 



Sacrum long and narrow, twice as 

 long as wide. 



Thoracic vertebrae twelve in num- 

 ber. 



Thoraco-lumbar vertebras nineteen 

 in number. 



Spinous processes of thoracic ver- 

 tebras relatively long. 



Spinous processes of lumbar ver- 

 tebrae relatively high. 



Transverse processes of lumbar 

 vertebrae long and slender. 



Hypophyses found on the anterior 

 three lumbar vertebrae. 



Sacrum wide and triangular about 

 as wide as long. 



Shoulder Girdle and Upper Extremity 



Clavicle well developed. 



Scapula with antero-superior angle 

 much rounded off. 



Acromion very long, three times 

 the length of actual scapular spine. 



Supraspinous fossa of scapula nar- 

 row. 



Dorso-palmar depth of pisiform 

 not pronounced. 



Internal half of cuneiform more 

 largely developed, presenting a well 

 developed convex facet for articula- 

 tion with the ulna, in addition to the 

 cup-shaped cavity formed by the cune- 

 iform and pisiform together. 



Centrale larger, not flask-shaped. 



Os magnum smaller. 



Width of three middle metacarpals 

 at base contained about one and a 

 half times into length of the middle 

 metacarpal. 



Clavicle small and rudimentary. 



Scapula with antero-superior angle 

 not much rounded off. 



Acromion long, about half the 

 length of the actual scapular spine. 



Supraspinous fossa of scapula much 

 wider. 



Dorso-palmar depth of pisiform 

 very great, except in Pentalagus. 



Internal half of cuneiform not 

 largely developed nor presenting a 

 well developed convex facet for 

 articulation with the ulna, though 

 sometimes such a condition is indi- 

 cated. 



Centrale smaller, flask-shaped. 



Os magnum larger. 



Width of three middle metacarpals 

 at base contained about two and a 

 half times into length of the middle 

 metacarpal, except in Pentalagus. 



Pelz'is and Lozver Extremity 



Pubic symphysis absent. 



Antero-ventral angle of ilium with 

 a well-marked recurved spine. 



Middle cuneiform bone of the foot 

 intimately fused with the base of the 

 second metatarsal. 



Basal width of the metatarsals 

 taken together contained less than 

 twice into the length of the meta- 

 tarsals. 



A large sesamoid bone on the 

 plantar surface of the fifth metatarsal. 



Pubic symphysis well marked. 



Antero-ventral angle of ilium with- 

 out a well-marked recurved spine. 



Middle cuneiform of foot not fused 

 with the base of the second meta- 

 tarsal. 



Basal width of the metatarsals con- 

 tained two or more times into the 

 length of the metatarsals, except in 

 Pentalagus one and a half times. 



A prominent tubercle on the base 

 of the plantar surface of the fifth 

 metatarsal. 



