﻿[29] 
  CATALOGUE 
  OF 
  THE 
  FISHES 
  OF 
  NORTH 
  AMERICA. 
  817 
  

  

  331. 
  Hybopsis 
  amblops 
  Rafinesque. 
  Vw. 
  (331) 
  

   331b. 
  Hybopsis 
  amblops 
  rubri/rons 
  Jordan. 
  Vso. 
  (332) 
  

  

  332. 
  Hybopsis 
  hypsinotus 
  Cope. 
  Vse. 
  (333) 
  

  

  § 
  Erin 
  emus 
  Jordan. 
  

  

  333. 
  Hybopsis 
  dissimilis 
  Kirtland. 
  Vn. 
  (334) 
  

  

  334. 
  Hybopsis 
  monachus 
  Cope. 
  Vs. 
  (340) 
  

  

  335. 
  Hybopsis 
  zanemus 
  Jordan 
  & 
  Brayton. 
  Vse. 
  (339) 
  

  

  336. 
  Hybopsis 
  labrosus 
  Cope. 
  Vse. 
  (338) 
  

  

  337. 
  Hybopsis 
  hyostomus 
  ] 
  Gilbert. 
  Vw. 
  

  

  338. 
  Hybopsis 
  montanus 
  2 
  Meek. 
  Vw. 
  

  

  339. 
  Hybopsis 
  marconis 
  3 
  Jordan 
  & 
  Gilbert. 
  Vsw. 
  

  

  340. 
  Hybopsis 
  aestivalis 
  4 
  Girard. 
  Vsw. 
  (335, 
  336) 
  

  

  341. 
  Hybopsis 
  gelidus 
  5 
  Girard. 
  Vnw. 
  (337) 
  

  

  88.— 
  COUESIUS 
  Jordan. 
  (93) 
  

  

  342. 
  Couesius 
  squamilentus 
  Cope. 
  Vnw. 
  (341) 
  

  

  343. 
  Couesius 
  dissimilis' 
  1 
  Girard. 
  Vnw. 
  (342.) 
  

  

  344. 
  Couesius 
  plunibeus 
  7 
  Agassiz. 
  Vn. 
  (343) 
  

  

  345. 
  Couesius 
  physignathus 
  Cope. 
  Vnw. 
  (344) 
  

  

  89.— 
  PLATYGOBIO 
  Gill. 
  

  

  346. 
  Platygobio 
  gracilis 
  s 
  Richardson. 
  Vnw. 
  (345,340) 
  

  

  90.— 
  SEMQTILUS 
  Rafinesque. 
  (95) 
  

  

  347. 
  Semotilus 
  atromaculatus 
  9 
  Mitcbill. 
  V. 
  (347) 
  

  

  348. 
  Semotilus 
  thoreauianus 
  Jordan. 
  Vs. 
  (348) 
  

  

  349. 
  Semotilus 
  bullaris 
  Rafinesque. 
  Vne. 
  (349) 
  

  

  1 
  Nocomis 
  hyostomus 
  Gilbert, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus, 
  1884, 
  203. 
  Indiana, 
  Iowa, 
  to 
  Ten- 
  

   nessee 
  ; 
  not 
  raro 
  in 
  river 
  channels. 
  

  

  2 
  Hybopsis 
  montanus 
  Meek, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus, 
  1884. 
  Upper 
  Missouri 
  region. 
  

  

  3 
  Hybopsis 
  marconis 
  Jordan 
  & 
  Gilbert, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  1885. 
  Rio 
  Sau 
  Mar- 
  

   cos, 
  Texas. 
  

  

  *Gobio 
  aestivalis 
  Girard 
  = 
  Ceratichtliys 
  sterletus 
  Cope. 
  This 
  species 
  is 
  allied 
  to 
  H. 
  

   hyostomus, 
  but 
  has 
  a 
  much 
  smaller 
  eye 
  ; 
  4 
  to 
  4^ 
  in 
  head. 
  

  

  6 
  Hybopsis 
  gelidus 
  is 
  very 
  pale 
  in 
  color, 
  nearly 
  or 
  quite 
  immaculate. 
  The 
  lower 
  lobe 
  

   of 
  the 
  caudal 
  is 
  dusky 
  ; 
  the 
  eye 
  is 
  small, 
  4 
  in 
  head 
  ; 
  and 
  the 
  scales 
  aro 
  smaller 
  than 
  

   in 
  related 
  species, 
  there 
  being 
  44 
  in 
  the 
  lateral 
  line. 
  The 
  barbel 
  in. 
  these 
  small 
  fishes 
  

   (H. 
  gelidus; 
  aestivalis; 
  hyostomus; 
  zanemus; 
  montanas 
  ; 
  marconis, 
  ) 
  is 
  much 
  more 
  de- 
  

   veloped 
  than 
  in 
  any 
  other 
  of 
  the 
  American 
  Cyprinidce. 
  

  

  The 
  description 
  in 
  the 
  Synopsis, 
  of 
  Couesius 
  dissimilis 
  is 
  somewhat 
  confused 
  with 
  

   that 
  of 
  C. 
  plumbeus. 
  

  

  From 
  the 
  latter 
  species 
  C. 
  dissimilis 
  differs 
  in 
  the 
  larger 
  scales 
  (GO 
  instead 
  of 
  68), 
  the 
  

   more 
  decurved 
  lateral 
  line, 
  and 
  the 
  more 
  robust 
  body. 
  Mouth 
  oblique, 
  subterminal, 
  

   resembling 
  that 
  of 
  Semotilus. 
  It 
  is 
  thus 
  far 
  known 
  only 
  from 
  the 
  Upper 
  Missouri 
  re- 
  

   gion. 
  

  

  7 
  Gobio 
  plumbeus 
  Agassiz 
  = 
  iVbco 
  mis 
  milneri 
  Jordan 
  =Ceraticldhy8 
  prosthemius 
  Cope. 
  

   Adirondack 
  region, 
  northwest 
  to 
  Manitoba. 
  

  

  S 
  I 
  am 
  uuable 
  to 
  distinguish 
  Platygobio 
  pallidas, 
  by 
  the 
  description, 
  from 
  Platygobio 
  

   gracilis. 
  

  

  9 
  The 
  original 
  Cyprinus 
  corporalis 
  of 
  Mitcbill 
  is 
  Semotilus 
  bullaris. 
  This 
  species 
  must 
  

   therefore 
  stand 
  as 
  Semotilus 
  atromaculatus. 
  

   S. 
  Mis. 
  70 
  52 
  

  

  