﻿804 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  [16] 
  

  

  138. 
  Galeichthys 
  felis 
  Linnaeus. 
  N. 
  S. 
  (110,111) 
  

  

  139. 
  Galeichthys 
  platypogon 
  l 
  Giintlier. 
  P. 
  

  

  140. 
  Galeichthys 
  brandti 
  2 
  Steindachner. 
  P. 
  

  

  56.— 
  iELURICHTHYS 
  Baird 
  & 
  Girard. 
  (58) 
  

  

  141. 
  .Mlurichthys 
  marinus 
  Mitcliill. 
  S. 
  (112) 
  

  

  142. 
  iElurichthys 
  panamensis 
  3 
  Gill. 
  P. 
  

  

  143. 
  iElurichthys 
  pinnimaculatus 
  4 
  Steiudachner. 
  P. 
  

  

  Order 
  N.— 
  EVENTOGNATHI. 
  (L) 
  

   Family 
  XXXI.— 
  CATOSTOMIM3. 
  (30) 
  

  

  57.— 
  ICTIOBUS 
  Rafinesque. 
  (59, 
  60, 
  61) 
  

   § 
  Sclerognathus 
  Cuv. 
  & 
  Val. 
  (59) 
  

  

  144. 
  Ictiobus 
  cyprinella 
  Cuv. 
  & 
  Val. 
  Vw. 
  (113) 
  

  

  § 
  Ictiobus. 
  (60) 
  

  

  145. 
  Ictiobus 
  urus 
  Agassiz. 
  Vw. 
  (114) 
  

  

  146. 
  Ictiobus 
  bubalus 
  Rafmcsquc. 
  Vw. 
  (115) 
  

  

  § 
  Carpiodcs 
  Rafinesque. 
  (61) 
  

  

  147. 
  Ictiobus 
  carpio 
  5 
  Rafinesque. 
  Vw. 
  (116) 
  

  

  148. 
  Ictiobus 
  velifer 
  fi 
  Rafinesque. 
  Vw. 
  (120) 
  

   148 
  b. 
  Ictiobus 
  velifer 
  bison 
  Agassiz. 
  Vw. 
  (119) 
  

  

  148 
  c. 
  Ictiobus 
  velifer 
  tumidus 
  Baird 
  &, 
  Girard. 
  wV. 
  (117) 
  

  

  1 
  Arius 
  platypogon 
  Giintlier, 
  V. 
  147 
  ; 
  Jordan 
  & 
  Gilbert, 
  Bull. 
  U. 
  S. 
  Fish 
  Conim., 
  18S2, 
  

   44 
  ; 
  Mazatlan 
  to 
  Panama. 
  

  

  -Arius 
  brandti 
  Steindachner, 
  Ichethyol, 
  Beitr., 
  IV, 
  21,1875; 
  Jordan 
  & 
  Gilbert, 
  

   Bull. 
  U. 
  S. 
  Fish 
  Comm., 
  1882, 
  39; 
  Mazatlan 
  to 
  Panama, 
  

  

  3 
  MluricMhy8 
  panamensis 
  Gill. 
  Proc. 
  Ac. 
  Nat. 
  Sci., 
  Pliila., 
  1863, 
  172 
  =^Slurichthy 
  8 
  n»- 
  

   chalis 
  Giintlier, 
  V, 
  179, 
  I860 
  = 
  Mlurichthys 
  panamensis 
  Jordan 
  & 
  Gilbert. 
  Bull. 
  U. 
  S. 
  

   Fish 
  Comm., 
  1882, 
  35; 
  Mazatlan 
  to 
  Panama. 
  

  

  * 
  Mlurichthys 
  pivnimaculatus 
  Steindachner, 
  Ichtb., 
  Beitr., 
  IV, 
  15, 
  1875, 
  Jordan 
  & 
  

   Gilbert, 
  Bull. 
  U. 
  S. 
  Fish 
  Comm., 
  1882, 
  34; 
  Mazatlan 
  to 
  Panama, 
  

  

  B 
  This 
  species 
  is 
  very 
  distinct 
  from 
  the 
  others 
  referred 
  to 
  Carpiodes. 
  Its 
  body 
  is 
  

   almost 
  fusiform, 
  the 
  depth 
  about 
  3 
  times 
  in 
  length, 
  the 
  head 
  4$, 
  and 
  the 
  first 
  ray 
  

   of 
  the 
  dorsal 
  not 
  more 
  than 
  half 
  the 
  length 
  of 
  the 
  base 
  of 
  the 
  fin. 
  

  

  '■Excepting 
  i". 
  carpio, 
  all 
  the 
  other 
  specimens 
  of 
  Carpiodes 
  which 
  I 
  have 
  examined 
  

   fro 
  1 
  points 
  wfst 
  of 
  the 
  Allegheny 
  Mountains 
  seem 
  to 
  me 
  to 
  belong 
  to 
  a 
  single 
  ex- 
  

   tremely 
  variable 
  or 
  polymorphous 
  species, 
  I. 
  velifer. 
  As 
  varieties, 
  wo 
  may 
  perhaps 
  

   reepginize 
  tumidus 
  (=grayi), 
  witb 
  high 
  back 
  and 
  small 
  eye; 
  bison 
  (=damalis), 
  with 
  

   large 
  eye, 
  moderate 
  fins, 
  and 
  snout 
  little 
  obtuse 
  ; 
  velifer, 
  with 
  snout 
  little 
  obtuse, 
  and 
  

   the 
  dorsal 
  fin 
  very 
  high, 
  and 
  difformis, 
  with 
  very 
  blunt 
  snout, 
  large 
  eye, 
  and 
  very 
  

   high 
  tins. 
  These 
  forms, 
  however, 
  appear 
  to 
  intergrade 
  perfectly. 
  

  

  