﻿DESCRIPTIONS 
  OF 
  NEW 
  SPECIES 
  OF 
  CRABS 
  OF 
  THE 
  

   FAMILY 
  OCYPODID^. 
  

  

  By 
  Mary 
  J. 
  Rathbun, 
  

  

  Assistant 
  Curctor, 
  Division 
  of 
  Marine 
  Invertebrates, 
  United 
  States 
  National 
  Museum. 
  

  

  While 
  studying 
  Philippine 
  and 
  other 
  Indo-Pacific 
  crabs 
  of 
  the 
  

   family 
  Ocypodidae 
  in 
  the 
  United 
  States 
  National 
  Museum, 
  four 
  new 
  

   species 
  were 
  found 
  which 
  are 
  not 
  included 
  in 
  the 
  material 
  destined 
  

   for 
  special 
  faunal 
  reports. 
  Three 
  of 
  these 
  are 
  fiddler 
  crabs 
  of 
  the 
  

   genus 
  Uca 
  ( 
  = 
  Gelasimus) 
  and 
  the 
  fourth 
  is 
  a 
  MacropJithalmus. 
  

  

  UCA 
  ZAMBOANGANA, 
  new 
  species. 
  

  

  Plate 
  74. 
  

  

  Type-locality. 
  — 
  Philippine 
  Islands: 
  Zamboanga, 
  Mindanao; 
  May, 
  

   1904; 
  Dr. 
  E. 
  A. 
  Mearns, 
  United 
  States 
  Army; 
  6 
  males. 
  

  

  Type.— 
  Cat. 
  No. 
  43307, 
  U.S.N.M. 
  

  

  Dimensions. 
  — 
  Type 
  male, 
  length 
  of 
  carapace 
  17.6 
  nam., 
  width 
  29.8 
  

   mm. 
  ; 
  largest 
  male, 
  length 
  of 
  carapace 
  23.4 
  mm., 
  width 
  39.5 
  mm. 
  

  

  A 
  large 
  species, 
  belonging 
  to 
  that 
  section 
  of 
  the 
  group 
  of 
  narrow- 
  

   fronted 
  species 
  in 
  which 
  the 
  lower 
  margin 
  of 
  the 
  orbit 
  has 
  an 
  accessory 
  

   row 
  of 
  granules 
  above 
  it. 
  

  

  Carapace 
  one 
  and 
  two-third 
  times 
  as 
  broad 
  as 
  long; 
  the 
  orbital 
  

   margin 
  nearly 
  transverse, 
  the 
  convex 
  portion 
  inclined 
  very 
  slightly 
  

   backward, 
  separated 
  by 
  a 
  deep 
  sinus 
  from 
  the 
  outer 
  angle, 
  which 
  is 
  

   acute 
  and 
  points 
  obliquely 
  forward; 
  side 
  margins 
  raised 
  and 
  very 
  

   sinuous, 
  the 
  anterior 
  part 
  nearly 
  straight, 
  posterior 
  curving 
  strongly 
  

   inward; 
  dorsal 
  surface 
  deeply 
  sulcate; 
  frontal 
  furrow 
  narrow- 
  trian- 
  

   gular, 
  sides 
  concave, 
  tip 
  blunt-pointed; 
  accessory 
  row 
  of 
  granules 
  

   above 
  the 
  lower 
  margin 
  of 
  the 
  orbit 
  occupying 
  nearly 
  the 
  whole 
  length 
  

   of 
  the 
  orbit, 
  but 
  not 
  reaching 
  to 
  the 
  inner 
  end 
  and 
  rarely 
  to 
  the 
  outer 
  

   end, 
  composed 
  of 
  from 
  20 
  to 
  22 
  fine 
  granules 
  and 
  lying 
  close 
  to 
  the 
  

   margin. 
  

  

  The 
  large 
  chehped, 
  which 
  in 
  four 
  out 
  of 
  six 
  males 
  lies 
  on 
  the 
  right 
  

   side, 
  and 
  in 
  two 
  males 
  on 
  the 
  left 
  side, 
  is 
  very 
  broad 
  and 
  strong; 
  inner 
  

   margin 
  of 
  arm 
  granulate, 
  not 
  prominent; 
  granules 
  of 
  wrist 
  and 
  palm 
  

  

  Proceedings 
  U. 
  S. 
  National 
  Museum, 
  Vol. 
  44— 
  No. 
  1971. 
  

  

  615 
  

  

  