﻿NO. 
  1131. 
  FISHES 
  FROM 
  COLORADO 
  BASIX—O 
  TLBERTJXD 
  SCOFIELD. 
  489 
  

  

  of 
  lieatl 
  li 
  ill 
  its 
  length. 
  Foiitanelle 
  obliterated, 
  the 
  bone 
  covering 
  it 
  

   very 
  thin. 
  IMouth 
  very 
  broad, 
  its 
  width 
  contained 
  3i 
  times 
  in 
  length 
  of 
  

   head. 
  Lips 
  large, 
  papillose. 
  Lower 
  lip 
  broadly 
  V-shaped 
  behind, 
  but 
  

   slightly 
  incised, 
  a 
  broad 
  but 
  shallow 
  notch 
  at 
  junction 
  of 
  edge 
  of 
  upper 
  

   and 
  lower 
  lips. 
  Upper 
  edge 
  of 
  dorsal 
  straight; 
  front 
  of 
  dorsal 
  midway 
  

   between 
  tip 
  of 
  snout 
  and 
  base 
  of 
  caudal; 
  pectorals 
  1,^ 
  in 
  head; 
  ven- 
  

   trals 
  li%; 
  anal 
  reaching 
  base 
  of 
  caudal, 
  1^^ 
  in 
  head; 
  caudal 
  peduncle 
  

   1^ 
  in 
  head, 
  its 
  least 
  depth 
  2i 
  in 
  head 
  or 
  slightly 
  more 
  than 
  '1 
  in 
  its 
  own 
  

   length. 
  

  

  A 
  preliminary 
  account 
  of 
  this 
  s])ecies 
  has 
  l>een 
  given 
  by 
  Jordan 
  & 
  

   Evermann.' 
  

  

  Table 
  of 
  mtasuremcnts. 
  

  

  Tyjje.—^o. 
  48126, 
  U.S.KM. 
  

  

  2. 
  CATOSTOMUS 
  LATIPINNIS 
  (Baird 
  & 
  Girard).- 
  

  

  Five 
  specimens 
  of 
  this 
  species 
  were 
  taken 
  in 
  the 
  Salt 
  liiver 
  at 
  

   Teinpe, 
  Arizona. 
  It 
  very 
  closely 
  resembles 
  C. 
  discobolus 
  of 
  Green 
  

   Iviver 
  and 
  Graiiil 
  liiver 
  (both 
  ti'ibutaries 
  of 
  the 
  Colorado), 
  but 
  difters 
  

   in 
  having 
  larger 
  scales, 
  more 
  dorsal 
  rays, 
  and 
  a 
  more 
  slender 
  caudal 
  

   peduncle, 
  as 
  well 
  as 
  a 
  more 
  anterior 
  insertion 
  of 
  the 
  dorsal 
  fin. 
  These 
  

   two 
  fishes 
  have 
  been 
  confused 
  in 
  Jordan 
  & 
  Evermann\s 
  "Fishes 
  of 
  

   iSToith 
  and 
  Middle 
  America." 
  Their 
  description 
  of 
  G. 
  latijrinnis 
  is 
  

   taken 
  from 
  specimens 
  of 
  C. 
  discobolus 
  from 
  Green 
  Eiver 
  and 
  Grand 
  

   Eiver, 
  and 
  fiom 
  notes 
  on 
  Baird 
  & 
  Girard's 
  type 
  of 
  C. 
  JatipiDvis. 
  

   Following 
  is 
  a 
  descrii^tion 
  and 
  table 
  of 
  measurements 
  based 
  on 
  our 
  

   specimens. 
  

  

  Head 
  4.^ 
  in 
  length, 
  depressed 
  and 
  flat 
  above. 
  Eye 
  high 
  up 
  and 
  

   small, 
  5 
  to 
  7 
  in 
  head, 
  3 
  to 
  3i 
  in 
  snout, 
  2^ 
  to 
  2f 
  in 
  interorbital 
  space. 
  

   Interorbital 
  width 
  2f 
  in 
  head. 
  Depth 
  about 
  oj; 
  least 
  depth 
  of 
  caudal 
  

   ]ied 
  uncle 
  4i 
  in 
  head, 
  3 
  J 
  in 
  its 
  own 
  length 
  ; 
  greatest 
  depth 
  of 
  head 
  1| 
  in 
  

   its 
  length; 
  depth 
  below 
  lower 
  edge 
  of 
  orbit 
  3 
  in 
  head. 
  Dorsal 
  14 
  or 
  

   15: 
  aiml 
  7. 
  Scales 
  19 
  or 
  20—80 
  to 
  102—10 
  to 
  18, 
  46 
  to 
  50 
  transverse 
  

   rows 
  in 
  front 
  of 
  dorsal 
  fin. 
  Fins 
  very 
  large, 
  the 
  dorsal 
  with 
  its 
  upi^er 
  

   margin 
  concave; 
  ventrals 
  and 
  pectoral 
  rounded 
  ; 
  dorsal 
  as 
  long 
  as 
  its 
  

   longest 
  ray, 
  Ij^g 
  in 
  head, 
  its 
  last 
  ray 
  a 
  little 
  less 
  than 
  half 
  the 
  length 
  

  

  'Fishes 
  of 
  North 
  and 
  IVIiddle 
  America, 
  1896, 
  p. 
  170. 
  

  

  -Not 
  Catostomns 
  latip'nniis 
  Jordan, 
  Bull. 
  United 
  States 
  Fish 
  Commission, 
  1889, 
  p. 
  26, 
  

   which 
  := 
  C. 
  dhcobohis 
  Cope. 
  

  

  