﻿282 
  

  

  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  

  

  VOL. 
  98 
  

  

  Proboscis 
  cylindrical, 
  blunt 
  at 
  tip, 
  with 
  a 
  slight 
  constriction 
  near 
  

   distal 
  third, 
  inserted 
  ventrally 
  at 
  about 
  the 
  middle 
  of 
  the 
  cephalic 
  

   segment. 
  

  

  Chelif 
  ore 
  : 
  Scape 
  long, 
  slender, 
  curved. 
  Chelae 
  small, 
  with 
  curved, 
  

   opposing 
  fingers 
  which 
  are 
  without 
  spines 
  or 
  teeth 
  on 
  the 
  inner 
  sur- 
  

   face. 
  There 
  is 
  a 
  low 
  inconspicuous 
  spiny 
  cushion 
  on 
  the 
  dactylus, 
  

   with 
  short 
  spines 
  sparsely 
  scattered 
  on 
  its 
  surface. 
  

  

  Abdomen 
  erect, 
  about 
  twice 
  as 
  long 
  as 
  wide, 
  rounded 
  at 
  tip. 
  

  

  Oviger 
  inserted 
  on 
  first 
  lateral 
  process 
  about 
  halfway 
  from 
  center 
  

   of 
  cephalic 
  segment. 
  The 
  third 
  segment 
  is 
  long 
  and 
  relatively 
  

   straight, 
  with 
  a 
  slight 
  curve 
  proximally. 
  There 
  is 
  an 
  incomplete, 
  

   nonarticulated 
  segmentation 
  near 
  the 
  base. 
  Fourth 
  segment 
  about 
  

   five 
  times 
  as 
  long 
  as 
  wide, 
  curved, 
  with 
  a 
  few 
  small 
  spines. 
  Fifth 
  

   segment 
  with 
  a 
  nonarticulated 
  segmentation 
  near 
  the 
  middle 
  ; 
  proxi- 
  

   mal 
  half 
  adorned 
  with 
  scattered 
  recurved 
  spines, 
  distal 
  half 
  bare, 
  

   palpiform. 
  

  

  Third 
  leg 
  long, 
  slender, 
  straight, 
  without 
  prominent 
  spines 
  or 
  tu- 
  

   bercles. 
  First 
  coxae 
  short, 
  about 
  as 
  broad 
  as 
  long, 
  third 
  coxa 
  one 
  

   and 
  one-half 
  times 
  as 
  long 
  as 
  first, 
  second 
  nearly 
  twice 
  as 
  long 
  as 
  both 
  

   first 
  and 
  third 
  together. 
  Femur 
  and 
  tibiae 
  straight, 
  sticklike, 
  with- 
  

   out 
  conspicuous 
  spines 
  or 
  tubercles. 
  Tarsus 
  very 
  short, 
  propodus 
  

   long, 
  curved, 
  with 
  two 
  very 
  large 
  basal 
  spines 
  and 
  a 
  smaller 
  one 
  on 
  the 
  

   corner 
  of 
  the 
  heel, 
  and 
  about 
  15 
  smaller 
  spines 
  on 
  the 
  sole. 
  Terminal 
  

   claws 
  three-fourths 
  or 
  four-fifths 
  as 
  long 
  as 
  propodus, 
  slightly 
  curved. 
  

   Auxiliaries 
  slender, 
  about 
  one-fifth 
  as 
  long 
  as 
  terminal 
  claw. 
  The 
  

   genital 
  pore 
  of 
  the 
  female 
  was 
  apparent 
  on 
  a 
  low 
  mound 
  of 
  the 
  first 
  

   coxae: 
  I 
  could 
  not 
  find 
  it 
  on 
  any 
  of 
  the 
  other 
  legs. 
  In 
  the 
  male 
  it 
  

   occurs 
  on 
  the 
  last 
  two 
  pairs 
  of 
  legs 
  as 
  a 
  low 
  tubercle 
  on 
  the 
  first 
  coxae. 
  

   There 
  is 
  a 
  row 
  of 
  15 
  or 
  more 
  small 
  pores 
  on 
  the 
  dorsal 
  surface 
  of 
  the 
  

   femur, 
  indicating 
  the 
  apertures 
  of 
  the 
  cement 
  glands. 
  

  

  Measunretnents. 
  — 
  As 
  follows 
  : 
  

  

  Mm. 
  

  

  Proboscis 
  2. 
  75 
  

  

  Trunk 
  4.75 
  

  

  Second 
  lateral 
  process, 
  width 
  3. 
  2 
  

  

  Scape 
  2. 
  75 
  

  

  Chela 
  1. 
  

  

  Abdomen 
  . 
  8 
  

  

  Third 
  leg 
  : 
  Mm. 
  

  

  First 
  coxa 
  1. 
  

  

  Second 
  coxa 
  4. 
  

  

  Third 
  coxa 
  1. 
  6 
  

  

  Femur 
  8.0 
  

  

  First 
  tibia 
  8. 
  

  

  Second 
  tibia 
  9. 
  

  

  Tardus 
  .2 
  

  

  Propodus 
  1. 
  9 
  

  

  Terminal 
  claw 
  1. 
  25 
  

  

  Auxiliary 
  claw 
  . 
  3 
  

  

  Remarks. 
  — 
  ^Although 
  this 
  material 
  establishes 
  a 
  rather 
  wide 
  bathy- 
  

   metric 
  range 
  (82-587 
  fathoms) 
  for 
  this 
  species, 
  I 
  could 
  see 
  no 
  signifi- 
  

   cant 
  difference 
  between 
  the 
  specimens 
  from 
  various 
  depths. 
  The 
  num- 
  

  

  