﻿266 
  0. 
  C. 
  Marsh 
  — 
  Notice 
  of 
  New 
  Vertebrate 
  Fossils. 
  

  

  Torosaurus 
  latus, 
  gen. 
  et 
  sp. 
  nov. 
  

  

  Another 
  well-marked 
  species 
  of 
  this 
  group, 
  which 
  may 
  be 
  

   referred 
  to 
  a 
  new 
  genus, 
  is 
  represented 
  by 
  one 
  skull, 
  and 
  parts 
  

   of 
  the 
  skeleton, 
  from 
  nearly 
  the 
  same 
  horizon 
  as 
  the 
  specimen 
  

   above 
  described. 
  One 
  of 
  the 
  most 
  striking 
  features 
  of 
  the 
  

   present 
  species 
  is 
  seen 
  in 
  the 
  posterior 
  crest, 
  which, 
  instead 
  

   of 
  being 
  complete 
  as 
  in 
  the 
  skulls 
  hitherto 
  found, 
  is 
  perforated 
  

   by 
  a 
  pair 
  of 
  large 
  openings. 
  These 
  are 
  in 
  the 
  parietals, 
  but 
  they 
  

   have 
  the 
  inner 
  margin 
  of 
  each 
  squamosal 
  for 
  their 
  outer 
  border. 
  

   They 
  are 
  well 
  behind 
  the 
  supra-temporal 
  fossae, 
  but 
  doubtless 
  

   were 
  originally 
  connected 
  with 
  them. 
  They 
  may 
  be 
  called 
  the 
  

   supra-temporal 
  fontanelles. 
  The 
  squamosal 
  bones, 
  moreover, 
  

   are 
  very 
  long 
  and 
  slender, 
  and 
  distally 
  only 
  show 
  near 
  the 
  ends 
  

   sutures 
  for 
  union 
  with 
  the 
  parietals. 
  Another 
  distinctive 
  

   character 
  is 
  seen 
  in 
  the 
  main 
  horn-cores, 
  which 
  are 
  placed 
  well 
  

   back 
  of 
  the 
  orbit. 
  The 
  nasal 
  horn-core 
  is 
  short, 
  with 
  the 
  apex 
  

   compressed, 
  and 
  directed 
  forward. 
  

  

  This 
  genus 
  is 
  of 
  much 
  interest, 
  as 
  it 
  represents 
  an 
  earlier 
  and 
  

   less 
  specialized 
  form 
  than 
  either 
  Ceratops 
  or 
  Triceratops, 
  both 
  

   of 
  which 
  have 
  the 
  posterior 
  crest 
  complete. 
  The 
  existing 
  

   Chameleons 
  show 
  the 
  other 
  extreme, 
  where 
  the 
  outline 
  only 
  of 
  

   the 
  parietal 
  crest 
  has 
  been 
  attained. 
  

  

  Some 
  of 
  the 
  principal 
  dimensions 
  of 
  this 
  skull 
  are 
  as 
  follows 
  : 
  

  

  Length 
  from 
  apex 
  of 
  nasal 
  horn-core 
  to 
  extremity 
  of 
  

  

  squamosal 
  80 
  inches. 
  

  

  Distance 
  from 
  same 
  apex 
  to 
  front 
  of 
  orbit 
  21 
  " 
  

  

  Distance 
  from 
  same 
  to 
  front 
  of 
  parietal 
  opening 
  54 
  " 
  

  

  Width 
  between 
  posterior 
  extremities 
  of 
  squamosals-. 
  56 
  " 
  

  

  This 
  important 
  specimen 
  was 
  discovered 
  by 
  Mr. 
  J. 
  B. 
  

   Hatcher, 
  in 
  the 
  Laramie 
  of 
  Wyoming. 
  

  

  Torosaurus 
  gladius, 
  sp. 
  nov. 
  

  

  A 
  second 
  species 
  of 
  apparently 
  the 
  same 
  genus 
  is 
  represented 
  

   by 
  various 
  portions 
  of 
  a 
  skull 
  in 
  good 
  preservation. 
  In 
  this 
  

   specimen, 
  the 
  nasal 
  horn-core 
  is 
  short 
  and 
  obtuse, 
  and 
  nearly 
  

   upright. 
  The 
  main 
  horn-cores 
  are 
  elongate, 
  oval 
  in 
  outline, 
  

   and 
  in 
  position 
  resemble 
  those 
  of 
  the 
  skull 
  above 
  described. 
  

   The 
  most 
  remarkable 
  features 
  in 
  the 
  present 
  specimen 
  are 
  the 
  

   squamosal 
  bones, 
  which 
  are 
  greatly 
  elongated, 
  and 
  so 
  attenuated 
  

   as 
  to 
  have 
  the 
  general 
  shape 
  of 
  the 
  blade 
  of 
  a 
  sword, 
  thus 
  

   suggesting 
  the 
  specific 
  name. 
  These 
  bones, 
  moreover, 
  show 
  

   but 
  slight 
  evidence 
  at 
  their 
  distal 
  extremity 
  of 
  union 
  with 
  the 
  

   parietals, 
  as 
  the 
  inner 
  margin 
  is 
  rounded 
  for 
  nearly 
  half 
  the 
  

   length. 
  This 
  feature 
  will 
  distinguish 
  the 
  present 
  species 
  from 
  

   all 
  others 
  hitherto 
  described. 
  

  

  