﻿38 
  

  

  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  

  

  VOL. 
  08 
  

  

  lateral 
  line 
  to 
  anal 
  origin 
  2i/2 
  and 
  21/2 
  ; 
  scale 
  rows 
  from 
  upper 
  edge 
  of 
  

   gill 
  opening 
  to 
  midbase 
  of 
  caudal 
  fin 
  40 
  and 
  40 
  ; 
  scales 
  between 
  anus 
  

   and 
  anal 
  origin 
  4 
  or 
  5 
  and 
  5 
  ; 
  scales 
  in 
  front 
  of 
  first 
  dorsal 
  18 
  and 
  17 
  ; 
  

   scale 
  rows 
  between 
  dorsals 
  6 
  and 
  8 
  ; 
  zig-zag 
  scales 
  around 
  least 
  depth 
  

   of 
  caudal 
  peduncle 
  12 
  and 
  — 
  

   and 
  2 
  + 
  1 
  + 
  15. 
  

  

  , 
  gill 
  rakers 
  on 
  first 
  gill 
  arch 
  2+1 
  + 
  15 
  

  

  Table 
  1. 
  — 
  Measurements 
  made 
  on 
  the 
  two 
  species 
  of 
  Adenops, 
  expressed 
  in 
  

  

  hundredths 
  of 
  the 
  standard 
  length 
  

  

  Characters 
  

  

  Standard 
  length 
  in 
  millimeters 
  

  

  Length 
  of 
  head 
  

  

  Greatest 
  depth 
  of 
  body 
  - 
  - 
  

  

  Length 
  of 
  snout 
  

  

  Diameter 
  of 
  orbit 
  - 
  

  

  Pohtorbital 
  length 
  of 
  head 
  

  

  Width 
  of 
  bony 
  interorbital 
  space 
  

  

  Length 
  of 
  caudal 
  peduncle 
  - 
  -.. 
  

  

  Least 
  depth 
  of 
  caudal 
  peduncle 
  

  

  Greatest 
  width 
  of 
  head 
  

  

  Distance 
  from: 
  

  

  Pelvic 
  insertion 
  to 
  anal 
  oiigin 
  

  

  Snout 
  tip 
  to 
  first 
  dorsal 
  origin 
  

  

  Snout 
  tip 
  to 
  second 
  dorsal 
  origin 
  

  

  Snout 
  tip 
  to 
  anal 
  origin 
  _. 
  

  

  Snout 
  tip 
  to 
  pectoral 
  insertion 
  

  

  Snout 
  tip 
  to 
  pelvic 
  insertion 
  

  

  First 
  dorsal 
  origin 
  to 
  second 
  dorsal 
  origin. 
  

  

  Anal 
  origin 
  to 
  center 
  of 
  anus 
  

  

  Length 
  of 
  longest 
  ray 
  of: 
  

  

  First 
  dorsal 
  fin 
  -.- 
  

  

  Second 
  dorsal 
  fin 
  

  

  Anal 
  fin 
  

  

  Pectoral 
  fin_. 
  

  

  Pelvic 
  fin 
  

  

  Length 
  of 
  next 
  to 
  last 
  ray 
  of 
  second 
  dorsal 
  

  

  Length 
  of 
  last 
  dorsal 
  ray 
  

  

  Length 
  of 
  depressed 
  second 
  dorsal 
  fm_ 
  

  

  Length 
  of 
  depressed 
  anal 
  fin 
  

  

  Length 
  of 
  base 
  of 
  second 
  dorsal 
  fin 
  

  

  Length 
  of 
  base 
  of 
  anal 
  fin. 
  

  

  analis 
  

  

  Holo- 
  

   type 
  

  

  59 
  

  

  22.0 
  

  

  15.9 
  

  

  7.29 
  

  

  6.61 
  

   10.0 
  

  

  7.46 
  

   20.3 
  

  

  7.96 
  

   10.9 
  

  

  22.7 
  

   57.6 
  

   73.6 
  

   62.7 
  

   22.5 
  

   40.3 
  

   16.3 
  

   9.66 
  

  

  8.64 
  

   9.15 
  

   12.2 
  

  

  10.9 
  

   4.58 
  

   6.95 
  

  

  15.4 
  

  

  25.1 
  

   9.49 
  

  

  18.8 
  

  

  Para- 
  

   type 
  

  

  45.5 
  

   21.5 
  

   18.2 
  

   6.16 
  

   6.16 
  

   9.67 
  

   7.25 
  

   21.1 
  

   8.79 
  

   10.6 
  

  

  22.6 
  

   66.9 
  

   72.0 
  

   69.1 
  

   21.8 
  

   37.6 
  

   16.0 
  

   10.6 
  

  

  6.59 
  

   10.3 
  

   11.6 
  

   16.0 
  

   10.5 
  

  

  4.62 
  

  

  6.59 
  

   15.4 
  

   24.4 
  

  

  9.23 
  

   20.0 
  

  

  Para- 
  

   type 
  

  

  34.8 
  

  

  22.4 
  

  

  17.2 
  

   6.90 
  

   7.46 
  

   9.48 
  

   8.33 
  

  

  22.4 
  

   9.48 
  

   9.48 
  

  

  22.4 
  

   56.6 
  

   73.0 
  

   61.7 
  

   23.3 
  

   40.8 
  

   17.2 
  

   10.6 
  

  

  7.18 
  

   10.3 
  

   12.4 
  

   16.4 
  

   10.3 
  

  

  4.31 
  

  

  5.17 
  

   15.8 
  

   24.1 
  

  

  8.62 
  

   18.7 
  

  

  argenteus 
  

  

  Holo- 
  

  

  typo 
  

  

  42.5 
  

   22.8 
  

   21.2 
  

   7.06 
  

   7.30 
  

   9.40 
  

   8.47 
  

   23.5 
  

   8.20 
  

   11.6 
  

  

  22.3 
  

   57.0 
  

   73.0 
  

   60.4 
  

   2.3.6 
  

   40.0 
  

   17.7 
  

   8.70 
  

  

  6.59 
  

  

  11.8 
  

  

  7.06 
  

   16.2 
  

   25.4 
  

  

  9.40 
  

   18.6 
  

  

  Para- 
  

   type 
  

  

  41.7 
  

   22.1 
  

   19.9 
  

   6.95 
  

   7.20 
  

   9.35 
  

   8.15 
  

   19.7 
  

   8.77 
  

   10.6 
  

  

  24.0 
  

   55.6 
  

   73.1 
  

   60.9 
  

   22.1 
  

   37.7 
  

   18.7 
  

  

  12.0 
  

  

  7.67 
  

   16.8 
  

   25.0 
  

  

  9.69 
  

  

  20.4 
  

  

  Color 
  in 
  alcohol. 
  — 
  In 
  addition 
  to 
  the 
  silvery 
  lateral 
  band, 
  bordered 
  

   by 
  dark 
  brown 
  above, 
  the 
  dark 
  pigment 
  appears 
  to 
  have 
  faded 
  except 
  

   along 
  middorsal 
  line 
  and 
  on 
  upper 
  surface 
  of 
  head 
  where 
  it 
  occurs 
  

   over 
  the 
  brain 
  and 
  around 
  the 
  four 
  glandular 
  areas 
  on 
  upper 
  surface 
  

   of 
  snout. 
  

  

  Remarhs. 
  — 
  This 
  new 
  species 
  may 
  be 
  distinguished 
  from 
  the 
  other 
  

   member 
  of 
  the 
  genus 
  and 
  from 
  Meiiibras 
  by 
  means 
  of 
  the 
  following 
  

   key: 
  

  

  