﻿NOTES 
  OX 
  A 
  COLLECTIOlSr 
  OF 
  FISHES 
  FROM 
  THE 
  

   COLOKADO 
  BASIN 
  IN 
  ARIZONA. 
  

  

  By 
  Charles 
  Henry 
  Gilbert, 
  

  

  Professor 
  of 
  Zoology, 
  Leland 
  Standford 
  Junior 
  Unirersiiii, 
  

   and 
  

  

  Norman 
  Bishop 
  Scofield, 
  

  

  Assistant, 
  California 
  State 
  Fish 
  Commission. 
  

  

  During 
  the 
  latter 
  half 
  of 
  April 
  and 
  the 
  early 
  part 
  of 
  May, 
  1890, 
  tlie 
  

   senior 
  author 
  and 
  Mr. 
  A. 
  B. 
  Alexander, 
  of 
  the 
  United 
  States 
  Fish 
  

   Commission, 
  were 
  temj)orarily 
  detached 
  from 
  the 
  "Albatross'' 
  and 
  

   assigned 
  to 
  special 
  duty 
  iu 
  Arizona. 
  The 
  principal 
  object 
  of 
  the 
  

   expedition 
  was 
  to 
  investigate 
  the 
  alleged 
  occurrence 
  of 
  shad 
  in 
  the 
  

   Lower 
  Colorado, 
  where 
  it 
  had 
  been 
  planted 
  several 
  years 
  before 
  by 
  the 
  

   United 
  States 
  Fish 
  Commission. 
  It 
  was 
  soon 
  ascertained 
  that 
  the 
  

   reports 
  of 
  the 
  capture 
  of 
  shad 
  had 
  been 
  erroneous, 
  the 
  lish 
  in 
  question 
  

   being 
  the 
  German 
  carp, 
  tlien 
  a 
  stranger 
  in 
  the 
  Colorado 
  River. 
  

   Repeated 
  trials 
  of 
  the 
  shad 
  net 
  and 
  seine 
  at 
  Yuma, 
  and 
  later 
  in 
  the 
  

   Horseshoe 
  Bend 
  of 
  the 
  Colorado 
  below 
  Lerdo, 
  Mexico, 
  failed 
  to 
  demon- 
  

   strate 
  the 
  presence 
  of 
  shad. 
  The 
  river 
  seejns 
  entirely 
  unsuited 
  to 
  it. 
  

  

  Collections 
  of 
  the 
  native 
  fishes 
  were 
  made 
  in 
  the 
  Colorado 
  and 
  iu 
  the 
  

   mouth 
  of 
  the 
  Gila 
  River 
  at 
  Yuma; 
  in 
  the 
  Salt 
  River 
  from 
  Tempe 
  to 
  

   near 
  the 
  mouth 
  of 
  the 
  Rio 
  Yerde, 
  and 
  in 
  the 
  u[)per 
  course 
  of 
  the 
  Rio 
  

   Yerde 
  at 
  Chino. 
  The 
  commoner 
  species 
  are 
  well 
  represented 
  in 
  the 
  

   collection, 
  and 
  in 
  addition 
  such 
  desiderata 
  as 
  Phtffoptenis 
  arf/entis.shmiSy 
  

   Mtda 
  fulgida. 
  a 
  new 
  species 
  of 
  Pantosteus, 
  and, 
  most 
  important 
  of 
  all, 
  

   Tiaroga 
  cobiti.s, 
  known 
  heretofore 
  only 
  from 
  the 
  tyi)es, 
  discovered 
  in 
  

   1851. 
  We 
  secured 
  all 
  the 
  species 
  credited 
  to 
  the 
  Lower 
  Colorado 
  and 
  

   Gila 
  rivers 
  excepting 
  of 
  Paniosteus 
  elarld 
  and 
  Catostomus 
  insignis. 
  

  

  In 
  their 
  excellent 
  historical 
  account 
  and 
  check 
  list 
  of 
  the 
  fishes 
  of 
  

   the 
  Colorado 
  River,^ 
  Evermann 
  and 
  Rutter 
  call 
  attention 
  to 
  the 
  fact 
  that 
  

   a 
  remarkably 
  high 
  percentage 
  of 
  its 
  fishes 
  are 
  peculiar 
  to 
  the 
  Colorado 
  

   Basin. 
  This 
  becomes 
  still 
  more 
  striking 
  when 
  we 
  examine 
  the 
  short 
  

   list 
  (seven 
  species 
  in 
  all) 
  supposed 
  by 
  them 
  to 
  be 
  found 
  in 
  other 
  basins 
  

   as 
  well. 
  For 
  of 
  these 
  seven, 
  two 
  must 
  be 
  eliminated: 
  Lepidomeda 
  vit- 
  

   iata 
  and 
  Cyprlnodon 
  niacularius. 
  L. 
  vittata 
  was, 
  it 
  is 
  true, 
  taken 
  iu 
  

   southwestern 
  Arizona 
  by 
  the 
  Death 
  Yalley 
  Expedition, 
  but 
  the 
  river 
  in 
  

  

  > 
  Bull. 
  U. 
  S. 
  Fish 
  Commission, 
  XIV, 
  1894, 
  pp. 
  475-486. 
  

  

  Proceedings 
  U. 
  S. 
  National 
  Museum, 
  Vol. 
  XX— 
  No. 
  1131. 
  

  

  487 
  

  

  