from the Oxford Chy of Peterborough. 



42.^ 



Tlie loeth nre slinrp-poiiitrd, cmveJ and circular in section, 

 without carina!, the enamol bein;; marked by a series of fine 

 longitudinal ridges, a few of which extend to the tip ; the 

 ridges are most luunerous on the inner (concave) side of the 

 crown. In the mutulible there wore abt>ut twenty-six teeth 

 on each side, closely crowded. The five or six anterior teeth 

 in the expanded symphysial region are enlarged. 'I'ho neck 

 is short, consisting of about twenty cervical vertebra9, tho 



iMK'. .".. 



Sboulder-f?ir«lle of Simolestes vorax from above. (Type specimen 

 R. Jiaiy.) -jV nat. size, cor., coracoid; gl., gleuoii cavity; tc, 

 scapula. 



centra of which are about as wide as high, while their length 

 is less than half the width; the terminal faces are slightly 

 concave. In front the neural arches bear a low spine, but 

 further back they increase greatly in height both through the 

 lengthening of the pedicles and of the spine. The facets for 

 the cervical ribs are double. The coracoids (tig. ")) are large 

 plates of bone, very thin except between the glenoid cavities. 

 Anteriorly they are prolonged forwards in the luiddh^ line in 

 Ann. (i- MiKj. N. Hist. tier. 8. Vol. iv. 30 



