﻿498 
  PROCEEDINGS 
  OF 
  THE 
  X.iTIOyjL 
  MUSEUM. 
  

  

  abrui)tly 
  upward 
  to 
  axis, 
  and 
  thence 
  straight 
  to 
  caudal; 
  no 
  trace 
  of 
  

   rudimentary 
  scales. 
  

  

  Color 
  brifjht 
  silvery, 
  with 
  reddish 
  brown 
  mottlings 
  along- 
  back; 
  a 
  

   band 
  of 
  scattered 
  black 
  specks 
  ahing 
  lateral 
  line, 
  extending 
  across 
  

   oi)ercle 
  and 
  around 
  snout: 
  body 
  pale 
  yellowisli 
  below; 
  peritoneum 
  

   and 
  gill 
  cavity 
  silvery, 
  with 
  a 
  few 
  bkick 
  specks. 
  A 
  few 
  specimens 
  have 
  

   the 
  second 
  dorsal 
  spine 
  longer 
  than 
  the 
  tirst, 
  agreeing 
  thus 
  with 
  the 
  

   original 
  description. 
  

  

  Family 
  PCECILIID.E. 
  

  

  Ifi. 
  CYPRINODON 
  MACULARIUS 
  Baird 
  & 
  Girard. 
  

  

  Numerous 
  specimens 
  were 
  obtained 
  in 
  a 
  spring-fed 
  pond 
  at 
  Lerdo, 
  

   Mexico. 
  

  

  17. 
  PCECILIA 
  OCCIDENTALIS 
  Baird 
  & 
  Girard. 
  

  

  Several 
  specimens 
  from 
  Salt 
  Eiver 
  at 
  Tempe, 
  Arizona. 
  We 
  agree 
  

   with 
  Garman 
  in 
  referring 
  this 
  species 
  to 
  the 
  genus 
  PcpeiJia. 
  

  

  Head 
  4^ 
  in 
  length; 
  depth 
  4; 
  eye 
  3.^; 
  D. 
  7 
  or 
  8; 
  A. 
  9 
  or 
  10; 
  scales 
  

   29-7 
  or 
  20-8. 
  Dorsal 
  slightly 
  behind 
  front 
  of 
  anal; 
  first 
  dorsal 
  ray 
  

   undivided, 
  two-thirds 
  as 
  long 
  as 
  second. 
  Brownish 
  above, 
  the 
  edges 
  of 
  

   the 
  scales 
  tliickly 
  dotted 
  with 
  brown, 
  silvery 
  beneath; 
  a 
  narrow 
  black 
  

   line 
  on 
  under 
  side 
  of 
  caudal 
  peduncle, 
  another 
  on 
  side 
  of 
  body, 
  com- 
  

   mencing 
  five 
  or 
  SIX 
  scales 
  back 
  of 
  opercle 
  and 
  running 
  through 
  center 
  

   of 
  middle 
  row 
  of 
  scales 
  to 
  caudal; 
  also 
  a 
  short 
  black 
  line 
  a 
  little 
  

   longer 
  than 
  eye 
  running 
  forward 
  and 
  outward 
  from 
  vent. 
  Teeth 
  in 
  two 
  

   well 
  separated 
  series; 
  those 
  of 
  inner 
  series 
  sundl 
  and 
  slightly 
  hooked; 
  

   the 
  outer 
  compressed, 
  curved, 
  pointed, 
  and 
  tipped 
  with 
  red. 
  Head 
  iu 
  

   male 
  Sf 
  iu 
  length; 
  depth 
  Sf. 
  Anal 
  and 
  ventrals 
  crowded 
  forward 
  in 
  

   males, 
  the 
  anal 
  ]>rolonged 
  into 
  an 
  intromittent 
  organ. 
  Length 
  of 
  

   females, 
  2i 
  inches; 
  males, 
  IJ 
  inches; 
  agreeing 
  in 
  all 
  respects 
  with 
  

   specimens 
  from 
  the 
  type 
  locality 
  (Tucson, 
  Arizona). 
  

  

  Family 
  GOBTID.E. 
  

  

  18. 
  GILLICHTHYS 
  DETRUSUS 
  Gilbert 
  & 
  Scofield, 
  new 
  species. 
  

   (Plate 
  XXX 
  VIII.) 
  

  

  Allied 
  to 
  (rUlichthys 
  mirabilifi 
  Cooper, 
  (littering 
  in 
  the 
  broader 
  and 
  

   more 
  depressed 
  head, 
  the 
  larger 
  anal 
  fin, 
  and 
  the 
  greater 
  distance 
  

   between 
  the 
  two 
  dorsals. 
  

  

  Head3i; 
  eye 
  7; 
  snout 
  4; 
  depth 
  5; 
  interorbital 
  5i; 
  D.VI, 
  13; 
  A. 
  11 
  

   developed 
  rays 
  (10 
  in 
  G. 
  onirabiU.s). 
  Scales 
  very 
  fine 
  anteriorly, 
  becom- 
  

   ing 
  much 
  larger 
  posteriorly; 
  about 
  seventy-five 
  oblique 
  rows 
  of 
  scales 
  

   from 
  base 
  of 
  pectoral 
  to 
  caudal, 
  and 
  about 
  twenty-five 
  longitudinal 
  

   rwos 
  between 
  front 
  of 
  anal 
  and 
  front 
  of 
  second 
  dorsal. 
  

  

  The 
  head 
  is 
  depressed, 
  the 
  frontals 
  broad, 
  tlie 
  least 
  frontal 
  width 
  

  

  