﻿DISTRIBUTION 
  OF 
  FISHES 
  — 
  JORDAN" 
  

  

  383 
  

  

  The 
  pirate 
  perches 
  and 
  the 
  Elassonia 
  are 
  two 
  very 
  small 
  families, 
  

   related 
  to 
  each 
  other, 
  and 
  distantly 
  related 
  perhaps 
  to 
  the 
  sunfishes. 
  

   They 
  are 
  probably 
  remains 
  of 
  some 
  older 
  fauna. 
  

  

  The 
  sun-fishes 
  are 
  peculiarly 
  North 
  American, 
  nothing 
  similar 
  being 
  

   found 
  in 
  any 
  other 
  region. 
  Their 
  ancestry 
  is 
  probably 
  to 
  be 
  sought 
  

   among 
  the 
  marine 
  Sen'^anidm^ 
  the 
  large-mouthed 
  black 
  bass 
  {Euro 
  

   salmoides) 
  being 
  probably 
  the 
  member 
  of 
  the 
  former 
  group 
  nearest 
  

   the 
  parent 
  stock. 
  

  

  ;<^<^^//f;^^^^^^^ 
  

  

  .1- 
  ■ 
  Ajij-.^ 
  MfJu 
  mt^^^i^ 
  ' 
  "^ 
  

  

  .:-^2s 
  

  

  ITiG. 
  7. 
  — 
  Log 
  Perch. 
  Percina 
  caprodes 
  Raflnesque. 
  Licking 
  Reservoir, 
  Ohio. 
  

  

  Fig. 
  8. 
  — 
  Bhie-breasted 
  Darter, 
  Nothonotus 
  camurus 
  Cope. 
  Cumberland 
  Gap 
  

  

  itm/f/ 
  

  

  Fig. 
  9. 
  — 
  Sand 
  Darter, 
  Ammocrypta 
  bcani 
  Jordan. 
  Notalbany 
  River, 
  La. 
  

  

  The 
  fresh-water 
  (striped) 
  hass 
  {Lepihema, 
  Ghrysoperea) 
  are 
  evi- 
  

   dently 
  allied 
  to 
  the 
  anadromous 
  members 
  of 
  the 
  same 
  group. 
  

  

  The 
  perch 
  family 
  is 
  originally 
  an 
  offshoot 
  from 
  the 
  sea 
  bass, 
  and 
  

   certainly 
  originally 
  from 
  Europe. 
  The 
  Darters 
  (all 
  American 
  and 
  

   east 
  of 
  the 
  Rocky 
  Mountains; 
  none 
  in 
  tropical 
  America) 
  form 
  a 
  

   group 
  {Etheostoma^ 
  Boleosoma^ 
  etc.) 
  composed 
  of 
  small, 
  brilliantly 
  

  

  