﻿118 
  

  

  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  

   XENAMBASSIS 
  HONESSI, 
  new 
  species 
  

  

  Figure 
  3 
  

  

  HoJoti/pe.—V.S.^M. 
  No. 
  122830, 
  a 
  specimen 
  87.6 
  mm. 
  in 
  standiird 
  

   length, 
  collected 
  in 
  1944 
  by 
  Capt. 
  Ralph 
  F. 
  Honess, 
  U.S.A., 
  in 
  either 
  

   the 
  Samboga 
  or 
  the 
  Giriia 
  River 
  at 
  Buna, 
  New 
  Guinea 
  (long. 
  148° 
  

   30' 
  E.; 
  lat. 
  8°45' 
  S.). 
  

  

  Paratypes.—U.S.^M. 
  No. 
  122831, 
  3 
  specimens, 
  T7.5, 
  80.5, 
  and 
  82 
  

   mm., 
  collected 
  along 
  with 
  the 
  holotype 
  and 
  bearing 
  same 
  data; 
  

   U.S.N.M. 
  No. 
  121832, 
  2 
  specimens, 
  58 
  and 
  87.5 
  mm., 
  bearing 
  same 
  

   data 
  as 
  holotype. 
  

  

  Descriptio7i. 
  — 
  Detailed 
  measurements 
  were 
  made, 
  and 
  these 
  data, 
  

   expressed 
  in 
  hundredths 
  of 
  the 
  standard 
  length, 
  are 
  recorded 
  first 
  for 
  

   the 
  holotype 
  and 
  then 
  for 
  two 
  paratypes 
  in 
  parentheses, 
  respectively. 
  

   Standard 
  lengths 
  in 
  millimeters 
  87.6 
  (82; 
  87.5). 
  

  

  Table 
  1. 
  — 
  Counts 
  recorded 
  for 
  certain 
  species 
  of 
  Centropomidae 
  from 
  New 
  Guinea 
  

  

  Greatest 
  depth 
  of 
  body 
  46.2 
  (45.1; 
  44.6) 
  ; 
  length 
  of 
  head 
  37.7 
  (37.8; 
  

   37.4) 
  ; 
  length 
  of 
  snout 
  9.25 
  (9.39; 
  10.2) 
  ; 
  diameter 
  of 
  eye 
  11.0 
  (11.3; 
  

   11.8) 
  ; 
  least 
  width 
  of 
  interorbital 
  space 
  9.82 
  (9.76; 
  9.02) 
  ; 
  length 
  from 
  

   tip 
  of 
  snout 
  to 
  rear 
  tip 
  of 
  maxillary 
  13.7 
  (13.4 
  ; 
  14.7) 
  ; 
  postorbital 
  length 
  

   of 
  head 
  18.3 
  (18.8; 
  17.7); 
  least 
  width 
  of 
  preorbital 
  opposite 
  tip 
  of 
  

   maxillary 
  2.28 
  (2.20; 
  2.28) 
  ; 
  least 
  depth 
  of 
  caudal 
  peduncle 
  14.4 
  (14.4; 
  

   13.7) 
  ; 
  length 
  of 
  caudal 
  peduncle 
  from 
  base 
  of 
  last 
  anal 
  ray 
  to 
  mid- 
  

   caudal 
  fin 
  base 
  18-8 
  (18.7; 
  17.4) 
  ; 
  length 
  of 
  procumbent 
  embedded 
  spine 
  

   at 
  origin 
  of 
  dorsal 
  fin 
  4.56 
  (4.27; 
  4.34); 
  lengih 
  of 
  longest 
  ray 
  of 
  

   pectoral 
  fin 
  25.5 
  (27.1 
  ; 
  25.7) 
  ; 
  longest 
  soft 
  ray 
  of 
  pelvic 
  fin 
  to 
  end 
  of 
  fila- 
  

   ment 
  25.7 
  (26.8; 
  25.1) 
  ; 
  length 
  of 
  pelvic 
  spine 
  15.6 
  (16.5; 
  16.6) 
  ; 
  length 
  

   of 
  first 
  dorsal 
  spine 
  8.10 
  (6.95; 
  7.77) 
  ; 
  of 
  second 
  dorsal 
  spine 
  19.6 
  (19.8; 
  

   18.3) 
  ; 
  of 
  last 
  dorsal 
  spine 
  13.8 
  (14.5; 
  15.2) 
  and 
  next 
  to 
  last 
  spine 
  13.5 
  

   (13.0; 
  13.2) 
  ; 
  longest 
  soft 
  ray 
  of 
  dorsal 
  fin 
  20.5 
  (20.1 
  ; 
  21.7) 
  and 
  of 
  anal 
  

   fin 
  21.6 
  (22.0 
  ; 
  — 
  ) 
  ; 
  length 
  of 
  first 
  anal 
  spine 
  8.56 
  (6.22 
  ; 
  8.34) 
  , 
  of 
  second 
  

   12.0 
  (12.8; 
  15.6), 
  and 
  of 
  third 
  anal 
  spine 
  14.8 
  (14.0; 
  14.8); 
  longest 
  

   caudal 
  fin 
  ray 
  34.2 
  (33.5; 
  30.0) 
  ; 
  shortest 
  midcaudal 
  fin 
  ray 
  16.8 
  (17.4; 
  

   16.1) 
  ; 
  length 
  of 
  longest 
  gill 
  raker 
  on 
  first 
  gill 
  arch 
  3.77 
  (4.27; 
  3.65) 
  ; 
  

  

  