﻿[13] 
  CATALOGUE 
  OF 
  THE 
  FISHES 
  OF 
  NORTH 
  AMERICA. 
  801 
  

  

  Subclass 
  ACTINOPTERI. 
  

  

  Order 
  I.— 
  SELACHOSTOMI. 
  (G 
  ) 
  

  

  Family 
  XXVI.— 
  POLYODOXTID^. 
  (25) 
  

   45.— 
  POLYODON 
  Lacepede. 
  (46) 
  

  

  100. 
  Polyodon 
  spathula 
  Walbaum. 
  Vw. 
  (73) 
  

  

  Order 
  J.— 
  GLANIOSTOMI. 
  (H) 
  

   Family 
  XXVII.— 
  ACIPENSEKID.E. 
  (20) 
  

  

  46.— 
  ACIPENSER 
  Linnams. 
  (47) 
  

  

  101. 
  Acipenser 
  sturio 
  oxyrhynchus 
  Mitchill. 
  N. 
  Ana. 
  (74). 
  

  

  102. 
  Acipenser 
  transmontanus 
  Richardson. 
  C. 
  A. 
  Ana. 
  (75) 
  

  

  103. 
  Acipenser 
  medirostris 
  Ayres. 
  C.A. 
  Ana. 
  (76) 
  

  

  104. 
  Acipenser 
  rubicundus 
  Le 
  Sueur. 
  Vn. 
  (77) 
  

  

  105. 
  Acipenser 
  brevirostris 
  Lo 
  Sueur. 
  N. 
  S. 
  (78) 
  

  

  47.-SCAPHIRHYNCHOPS 
  Gill. 
  (48) 
  

  

  106. 
  Scaphirhynchops 
  platyrhynchus 
  Rafinesque. 
  Vw. 
  (79) 
  

  

  Order 
  K— 
  GINGLYMODI. 
  1 
  (I) 
  

   Family 
  XXVIIL— 
  LEPLDOSTEIDiE. 
  (27) 
  

  

  48.-LEPIDOSTEUS 
  Lacdpede. 
  (50) 
  

  

  107. 
  Lepidosteus 
  osseus 
  Linnsus. 
  V. 
  (80) 
  

  

  108. 
  Lepidosteus 
  platystomus 
  Rafinesque. 
  V. 
  (81) 
  

  

  109. 
  Lepidosteus 
  tristcechus 
  2 
  Bloch 
  & 
  Schneider. 
  Vs. 
  W. 
  (82) 
  

  

  Order 
  L.— 
  HALECOMORPHI. 
  (J) 
  

  

  Family 
  XXIX.— 
  AMIID 
  M. 
  (28) 
  

   49.— 
  AMIA 
  Linnaeus. 
  (51) 
  

  

  110. 
  Amia 
  calva 
  Linnaeus. 
  V. 
  (83) 
  

  

  1 
  The 
  word 
  Ginglymodi 
  is 
  from 
  yiyyXvjiibi, 
  hinge, 
  sidoS, 
  like, 
  in 
  allusion 
  to 
  the 
  ball- 
  

   and-socket 
  joints 
  of 
  the 
  vertebrae. 
  

  

  2 
  The 
  subdivisions 
  of 
  Lepidosteus 
  (Cylindrosteus 
  ; 
  Airaciosteus) 
  certainly 
  have 
  no 
  value 
  

   higher 
  than 
  specific, 
  and 
  the 
  characters 
  used 
  in 
  distinguishing 
  them 
  are 
  variable 
  and 
  

   of 
  slight 
  importance. 
  It 
  is 
  often 
  difficult 
  to 
  distinguish 
  L. 
  platystomus, 
  even 
  specific- 
  

   ally, 
  from 
  L. 
  tristcechus. 
  Specimens 
  from 
  Cuba 
  (tristcechus) 
  are 
  not 
  distinguishable 
  

   from 
  others 
  from 
  Florida 
  (spatula). 
  

  

  S. 
  Mis. 
  70 
  51 
  

  

  