566 
ME.  E.  LYDEKKEE  ON  TWO  SAEEOPOBOTTS  [Hov.  I  893, 
41.  On  Two  Dinosaeeian  Teet nfrom,  Aylesbttey.  By  B.  Lydekeee, 
Esq.,  B.A.,  E.G.S.  (Bnad  June  21st,  1893.) 
I  hate  previously  figured  in  this  Journal  two  teeth  of  large  Dino- 
saurian  reptiles  belonging  to  the  Sauropodous  division  of  the  group 
— the  one  in  vol.  xliv.  pi.  iii.  fig.  4,  and  the  other  in  vol.  xlv.  p.  243, 
fig.  7 ;  and  I  have  now  the  pleasure  of  bringing  to  notice  two  other 
examples  of  such  teeth,  recently  obtained  by  Mr.  J.  Alstone,  from 
strata  at  Beagle  Pit,  Hartwell,  near  Aylesbury,  believed  to  be  of 
Portlandian  age.  Of  the  two  specimens  previously  figured,  the  former 
Pig.  1. — Inner  and  Lateral  Aspects  of  Tooth  of  Hoplosaurus 
armatus.  ( From  the  Wealden  of  the  Isle  of  Wight .) 
[Natural  size.] 
was  originally  described  under  the  name  of  Ornithopsis  Hulkei , 
a  name  subsequently  replaced  by  Hoplosaurus  armatus,  as  being 
one  which  had  been  applied  by  Gervais  at  an  earlier  date  to 
this  particular  tooth.1  Of  this  tooth  two  views  are  given  in 
the  accompanying  figure.  The  second  specimen,  which,  like  the 
preceding,  is  from  the  Wealden,  was  at  first  referred  provisionally 
1  See  Cat.  Boss.  Bept.  Brit.  Mus.  pt.  iv.  (1890)  p.  243. 
