﻿820 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  [32] 
  

   98.— 
  ALGANSEA 
  1 
  Girard. 
  (104) 
  

  

  406. 
  Algansea 
  obesa 
  Girard. 
  R. 
  (408) 
  

  

  407. 
  Algansea 
  symmetrica 
  3 
  Baird 
  & 
  Girard. 
  T. 
  (409) 
  

  

  408. 
  Algansea 
  bicolor 
  Girard. 
  T. 
  (410) 
  

  

  409. 
  Algansea 
  parovaria 
  3 
  Cope. 
  R. 
  (411) 
  

  

  410. 
  Algansea 
  thalassina 
  4 
  Cope. 
  

  

  411. 
  Algansea 
  antica 
  Cope. 
  Vsw. 
  (412) 
  

  

  412. 
  Algansea 
  olivacea 
  5 
  Cope. 
  R. 
  

  

  413. 
  Algansea 
  dimidiata 
  6 
  Cope. 
  R. 
  

  

  § 
  Siphaleles 
  Cope. 
  

  

  414. 
  Algansea 
  vittata 
  7 
  Cope. 
  R. 
  

  

  l 
  Leucos 
  Heckel 
  (preoccupied) 
  = 
  Algansea 
  Girard 
  — 
  Mylolatcus 
  Cope. 
  Professor 
  

   Cope 
  (Proc. 
  Ac. 
  Nat. 
  Sci. 
  Phila., 
  1883, 
  142) 
  recognizes 
  Mylolcucus 
  arid 
  Leucus 
  as 
  distinct 
  

   genera 
  ; 
  the 
  former 
  with 
  teeth 
  4-5 
  ; 
  the 
  latter 
  5-5. 
  Besides 
  these, 
  he 
  proposes 
  a 
  third 
  

   genus, 
  Siplmteles 
  {I.e. 
  146), 
  haviug 
  the 
  teeth 
  5-5, 
  with 
  grinding 
  surface, 
  and 
  the 
  lat- 
  

   eral 
  line 
  incomplete. 
  Such 
  minute 
  subdivision 
  seems 
  to 
  me 
  undesirable. 
  

  

  2 
  Pogoniclithys 
  symmetricus 
  Baird 
  & 
  Girard 
  (Proc. 
  Ac. 
  Nat. 
  Sci. 
  Phila., 
  1854,136)=: 
  

   Algansea 
  formosa 
  Girard 
  {I. 
  c. 
  1856, 
  183). 
  The 
  original 
  type 
  of 
  P. 
  symmetricus 
  has 
  the 
  

   teeth 
  4-5, 
  the 
  maxillary 
  without 
  barbel, 
  the 
  head 
  4 
  iu 
  length, 
  the 
  depth 
  4i. 
  Scales 
  

   9-53-6. 
  I 
  cannot 
  distinguish 
  it 
  from 
  Algansea 
  formosa. 
  

  

  3 
  Professor 
  Cope 
  regards 
  Myloleucus 
  parovanus 
  as 
  distinct 
  from 
  Algansea 
  bicolor. 
  It 
  

   is 
  described 
  as 
  follows 
  : 
  

  

  Translucent, 
  with 
  a 
  plumbeous 
  lateral 
  band 
  ; 
  ventrals 
  and 
  pectoral, 
  dusky 
  ; 
  dor- 
  

   sal 
  and 
  caudal 
  shaded 
  with 
  dark 
  ; 
  body, 
  rather 
  stout 
  ; 
  muzzle, 
  short, 
  conical 
  ; 
  mouth, 
  

   very 
  broad, 
  the 
  maxillary 
  reaching 
  front 
  of 
  orbit 
  ; 
  profile, 
  gently 
  arched; 
  eye, 
  large, 
  

   3 
  in 
  head, 
  equal 
  to 
  interorbital 
  width 
  ; 
  pectorals 
  reaching 
  little 
  more 
  than 
  halfway 
  

   to 
  ventrals; 
  the 
  latter 
  just 
  to 
  vent. 
  Head, 
  3 
  1 
  ; 
  depth, 
  \\. 
  D. 
  1,9; 
  A. 
  1,8. 
  Scales, 
  

   10-48-5. 
  Teeth, 
  4-5. 
  L., 
  12 
  inches 
  {Cope). 
  Beaver 
  River, 
  Utah; 
  Gooso 
  Lake 
  and 
  

   Klamath 
  Lake, 
  Oregon 
  ; 
  abundant. 
  

  

  {Myloleucus 
  parovanus 
  Cope, 
  Proc. 
  Am. 
  Phil. 
  Soc. 
  Phila., 
  1874, 
  136; 
  Cope 
  & 
  Yarrow, 
  

   Zool. 
  Wheeler 
  Son, 
  V. 
  669, 
  1876 
  ; 
  Cope, 
  Proc. 
  Ac. 
  Nat. 
  Sci. 
  Phila., 
  1883, 
  143.) 
  

  

  4 
  Myloleucus 
  lhalassinus 
  Cope. 
  Slenderer 
  than 
  M. 
  parovanus, 
  and 
  the 
  color 
  a 
  light 
  

   translucent 
  green, 
  quite 
  unlike 
  the 
  heavy 
  olivaceous 
  of 
  the 
  latter. 
  Head, 
  3|; 
  depth, 
  

   A\. 
  A. 
  1, 
  9. 
  Scales, 
  9-46-4. 
  Teeth, 
  4-5. 
  L., 
  6 
  inches. 
  One 
  specimen 
  known, 
  from 
  

   Goose 
  Lake, 
  Oregon. 
  {Cope, 
  Proc. 
  Ac. 
  Nat. 
  Sci. 
  Phila., 
  1883, 
  143.) 
  

  

  B 
  Leucus 
  olivaceus 
  Cope. 
  Dusky 
  olive 
  ; 
  the 
  belly 
  silvery 
  ; 
  no 
  lateral 
  baud 
  ; 
  bus 
  

   dusky; 
  body 
  fusiform, 
  compressed; 
  head 
  narrowed 
  to 
  the 
  muzzle, 
  the 
  mouth 
  open- 
  

   ing 
  obliquely 
  forwards 
  and 
  upwards; 
  maxillary 
  concealed 
  in 
  the 
  closed 
  mouth, 
  its 
  tip 
  

   extending 
  a 
  little 
  beyond 
  front 
  of 
  eye. 
  Eye 
  \\ 
  in 
  snout, 
  If 
  in 
  interorbital 
  space, 
  5 
  in 
  

   head, 
  middle 
  of 
  front 
  flat, 
  its 
  edges 
  sloping 
  to 
  the 
  superciliary 
  border. 
  Head, 
  3$; 
  

   depth 
  4. 
  A. 
  1, 
  8. 
  Scales, 
  13-58-7. 
  Teeth, 
  5-5, 
  sharp 
  edged. 
  L.,lfoot. 
  Pyramid 
  Lake, 
  

   Nevada; 
  very 
  abundant. 
  {Leucus 
  olivaceus 
  Cope. 
  Proc. 
  Ac. 
  Nat. 
  Sci. 
  Phila., 
  1883, 
  

   145.) 
  

  

  6 
  Leucus 
  dimidiatus 
  Cope. 
  Light 
  brown 
  above, 
  becoming 
  plumbeous 
  lower, 
  the 
  belly 
  

   pure 
  silver-white. 
  Eye 
  equal 
  to 
  interorbital 
  width, 
  3^ 
  in 
  head, 
  a 
  little 
  more 
  than 
  

   p3Dgth 
  of 
  muzzle. 
  Mouth 
  oblique, 
  the 
  maxillary 
  reaching 
  front 
  of 
  eye. 
  Ventral 
  a 
  lit- 
  

   tle 
  behind 
  front 
  of 
  dorsal. 
  Head, 
  4 
  ; 
  depth 
  4-i. 
  A. 
  1, 
  8. 
  Scales, 
  14-65-8. 
  Teeth, 
  5-5. 
  

   L., 
  4 
  inches. 
  Pyramid 
  Lake, 
  Nevada; 
  very 
  abundant. 
  

  

  {Leucus 
  dimidiatus 
  Cope, 
  Proc. 
  Ac. 
  Nat. 
  Sci. 
  Phila., 
  1883, 
  14(>.) 
  

  

  7 
  Siphatelcs 
  vittatus 
  Cope. 
  Brownish 
  above, 
  belly 
  and 
  sides 
  silvery; 
  a 
  straight 
  lat- 
  

   eral 
  band 
  of 
  lead-color 
  interrupted 
  at 
  base 
  of 
  caudal 
  by 
  a 
  vertical 
  band 
  of 
  straw- 
  

   yellow, 
  which 
  has 
  a 
  dark 
  posterior 
  edge. 
  Lateral 
  lino 
  very 
  imperfect. 
  Eye, 
  3 
  in 
  

   head, 
  a 
  little 
  less 
  than 
  interorbital 
  width. 
  Mouth 
  oblique, 
  the 
  maxillary 
  not 
  quite 
  

   reaching 
  front 
  of 
  eye. 
  Ventral 
  fins 
  beneath 
  anterior 
  part 
  of 
  dorsal. 
  Head 
  4 
  ; 
  depth, 
  

  

  