﻿A 
  NEW 
  HEMIRAMPPIID 
  FISH 
  — 
  MILLER 
  

  

  189 
  

  

  distant 
  bctwi-en 
  caudal 
  base 
  and 
  pelvic 
  insertions 
  ((. 
  niuch 
  nearer 
  

   {lelvic 
  insertions 
  tlian 
  caudal 
  base. 
  

  

  The 
  tei'th 
  of 
  the 
  holotype 
  are 
  unicuspid, 
  bicuspid, 
  and 
  tricuspid 
  and 
  

   are 
  arranged 
  in 
  about 
  three 
  to 
  seven 
  irre<!;ular 
  rows 
  in 
  the 
  upper 
  jaw 
  

   and 
  two 
  to 
  five 
  rows 
  in 
  the 
  lower 
  jaAv. 
  Tricuspid 
  teeth 
  are 
  present 
  

   only 
  posteriorly 
  in 
  each 
  jaw 
  and 
  virtually 
  all 
  the 
  anterior 
  teeth 
  (from 
  

   about 
  the 
  middle 
  of 
  each 
  jaw 
  forward) 
  are 
  unicuspid. 
  In 
  the 
  region 
  

   where 
  unicuspid 
  and 
  tricuspid 
  teeth 
  intergrade, 
  occasional 
  bicuspid 
  

   teeth 
  occur. 
  The 
  tooth 
  rows 
  are 
  conspicuously 
  broader 
  medially 
  on 
  

   each 
  side 
  of 
  the 
  upper 
  jaw 
  tlian 
  they 
  are 
  at 
  either 
  end, 
  and 
  teeth 
  are 
  

  

  Figure 
  9. 
  — 
  Sketch 
  of 
  head 
  regions 
  of 
  Ilyporhamphus 
  and 
  Ifemiramphus 
  to 
  illustrate 
  

   certain 
  diagnostic 
  differences 
  (see 
  tabic 
  1): 
  A, 
  I/yporhamphui 
  unifasciatus, 
  183 
  mm. 
  in 
  

   standard 
  length, 
  from 
  Key 
  West, 
  Florida 
  (U.S.N.M. 
  No. 
  34599); 
  B, 
  Hemiramphui 
  

   brasilieitsis, 
  \h2 
  mm. 
  long, 
  from 
  Key 
  West, 
  Florida 
  (U.S.N.M. 
  No. 
  38684). 
  Drawn 
  by 
  

   •Mrs. 
  A. 
  M. 
  Awl, 
  U. 
  S. 
  National 
  Museum. 
  

  

  absent 
  at 
  the 
  tips 
  of 
  both 
  upper 
  and 
  lower 
  jaws. 
  In 
  the 
  lower 
  jaw 
  the 
  

   rows 
  of 
  teeth 
  are 
  of 
  nearly 
  uniform 
  width 
  but 
  are 
  somewhat 
  broader 
  

   close 
  to 
  the 
  proximal 
  end 
  on 
  each 
  side 
  and 
  theji 
  become 
  narrow 
  gradu- 
  

   ally 
  forward 
  and 
  abruptly 
  behind 
  this 
  region. 
  In 
  the 
  largest 
  ])ara- 
  

   ty|>e 
  (KiO 
  mm. 
  in 
  standard 
  length) 
  there 
  are 
  more 
  ti'icuspid 
  teeth 
  than 
  

   in 
  the 
  holotype 
  (118 
  mm. 
  long), 
  which 
  agrees 
  with 
  my 
  observation 
  in 
  

   //. 
  roiiae 
  that 
  tricuspid 
  teeth 
  api)ear 
  with 
  increasing 
  size 
  of 
  the 
  indi- 
  

   \idual 
  (this 
  was 
  also 
  not<'d 
  in 
  other 
  American 
  //rnnramj>hus 
  and 
  

   Ih/lforJicinijihuR). 
  Otherwise 
  the 
  teeth 
  of 
  the 
  paratypes 
  have 
  es.sen- 
  

   tially 
  the 
  same 
  form 
  and 
  arrangement 
  as 
  in 
  the 
  holotype. 
  

  

  The 
  triangular 
  up{)er 
  jaw 
  is 
  rather 
  bluntly 
  pointed 
  at 
  the 
  apex 
  and 
  

   l>road<'r 
  at 
  the 
  base 
  than 
  it 
  is 
  long, 
  \\nien 
  the 
  mouth 
  is 
  closed 
  most 
  of 
  

   the 
  outer 
  teeth 
  of 
  the 
  lower 
  jaw 
  are 
  exposed. 
  The 
  scales 
  of 
  the 
  upper 
  

   jaw 
  are 
  irregularly 
  arranged, 
  the 
  transverse 
  rows 
  munbering 
  five 
  or 
  

   six 
  arross 
  the 
  base, 
  tlion 
  al»oiit 
  four, 
  whereas 
  from 
  about 
  the 
  middh' 
  to 
  

   tlio 
  tip 
  of 
  the 
  jaw 
  thoy 
  are 
  bi^erial 
  — 
  with 
  a 
  single 
  scale 
  on 
  each 
  side 
  of 
  

  

  