﻿SEMIONOTIDJE. 
  

  

  99 
  

  

  P. 
  6 
  374. 
  Imperfect 
  head 
  showing 
  cranial 
  roof 
  from 
  within. 
  

  

  Beckles 
  Coll. 
  

  

  46419. 
  Left 
  frontal 
  bone. 
  Cunnington 
  Coll. 
  

  

  P. 
  1121. 
  Larger 
  left 
  frontal 
  bone. 
  Egerton 
  Coll. 
  

  

  P. 
  7414. 
  Smallpair 
  of 
  frontals, 
  with 
  three 
  right 
  circumorbitals. 
  

  

  Enniskillen 
  Coll. 
  

  

  21974, 
  24816. 
  Three 
  parasphenoid 
  bones. 
  Purchased, 
  1848, 
  1849. 
  

  

  P. 
  1121 
  a. 
  Parasphenoid. 
  Egerton 
  Coll. 
  

  

  48371. 
  Right 
  premaxilla, 
  figured 
  in 
  Proc. 
  Zool. 
  Soc. 
  1893, 
  pi. 
  xlix. 
  

   fig. 
  3 
  ; 
  Middle 
  Pnrbeck, 
  Durdlestone 
  Bay. 
  Beckles 
  Coll. 
  

  

  P. 
  1119. 
  Left 
  premaxilla, 
  with 
  a 
  series 
  of 
  five 
  teeth. 
  Egerton 
  Coll. 
  

  

  P. 
  6373. 
  Imperfect 
  right 
  mandibular 
  ramus. 
  Beckles 
  Coll. 
  

  

  21974 
  a. 
  Two 
  small 
  right 
  dentary 
  bones. 
  Purchased, 
  1848. 
  

  

  36084. 
  Larger 
  left 
  dentary, 
  with 
  a 
  series 
  of 
  nine 
  well-preserved 
  

   teeth. 
  Cunnington 
  Coll. 
  

  

  40655, 
  46411. 
  Two 
  left 
  dentaries, 
  each 
  exhibiting 
  ten 
  teeth. 
  

  

  Purchased, 
  1867, 
  4f 
  Cunnington 
  Coll. 
  

  

  P. 
  6372. 
  Imperfect 
  small 
  fish 
  probably 
  of 
  this 
  species, 
  exhibiting 
  

   scales 
  with 
  remarkably 
  produced 
  postero-inferior 
  angle. 
  

  

  Beckles 
  Coll. 
  

  

  Lepidotus 
  leedsi, 
  sp. 
  nov. 
  

  

  1880. 
  Lepidotus 
  minor, 
  R. 
  Damon 
  (errore), 
  Geol. 
  Weymouth, 
  ed. 
  2 
  

   Suppl. 
  pi. 
  xi. 
  fig. 
  12. 
  

  

  Tyjpe. 
  Portion 
  of 
  skeleton 
  ; 
  British 
  Museum. 
  

  

  An 
  imperfectly 
  known 
  species 
  of 
  small 
  or 
  moderate 
  size. 
  External 
  

   cranial 
  bones 
  rugose 
  and 
  marked 
  with 
  sparse, 
  fine 
  tuberculations 
  : 
  

   opercular 
  bones 
  nearly 
  smooth, 
  with 
  few 
  patches 
  of 
  fine 
  tubercula- 
  

   tions. 
  Dentary 
  bone 
  robust, 
  but 
  scarcely 
  curved 
  inwards, 
  somewhat- 
  

   deepened 
  by 
  the 
  sharp 
  downward 
  curve 
  of 
  its 
  inferior 
  border 
  at 
  the 
  

   symphysis. 
  Teeth 
  mostly 
  oval 
  in 
  form, 
  those 
  on 
  the 
  inner 
  bones 
  

   robust, 
  but 
  elevated 
  on 
  pedicles 
  and 
  the 
  crown 
  sometimes 
  with 
  a 
  

   median 
  apex 
  or 
  tubercle; 
  teeth 
  of 
  dentary 
  bone 
  obtuse 
  and 
  the 
  

   pedicle 
  somewhat 
  tumid 
  immediately 
  below 
  the 
  crown; 
  splenial 
  

   teeth 
  in 
  about 
  three 
  irregular 
  concentric 
  series. 
  Operculum 
  nearly 
  

   twice 
  as 
  deep 
  as 
  its 
  maximum 
  breadth, 
  and 
  not 
  quite 
  twice 
  as 
  broad 
  

   at 
  the 
  lower 
  as 
  at 
  the 
  upper 
  extremity 
  ; 
  suboperculum 
  somewhat 
  

   less 
  than 
  one-quarter 
  as 
  deep 
  as 
  the 
  operculum, 
  with 
  very 
  large 
  

  

  h2 
  

  

  