﻿222 
  PROCEEDINGS 
  OP 
  THE 
  NATIONAL 
  MUSEUM. 
  vol. 
  44. 
  

  

  The 
  present 
  genus 
  is 
  thus 
  a 
  sort 
  of 
  patchwork 
  of 
  parts 
  of 
  other 
  

   genera 
  and 
  may 
  well 
  serve 
  as 
  another 
  connecting 
  link 
  between 
  those 
  

   genera. 
  The 
  majority 
  of 
  its 
  characters 
  locate 
  it 
  in 
  the 
  Caliginse. 
  

  

  DENTIGRYPS 
  CURTUS, 
  new 
  species, 
  

   Plate 
  32, 
  figs. 
  127-135. 
  

  

  Host 
  and 
  record 
  of 
  specimens. 
  — 
  Six 
  females 
  of 
  this 
  new 
  genus 
  were 
  

   obtained 
  by 
  Dr. 
  Edwin 
  Linton 
  from 
  the 
  mouth 
  and 
  gill 
  cavities 
  of 
  the 
  

   cardenal 
  or 
  poison 
  grouper, 
  Mycteroperca 
  venenosa 
  apua, 
  at 
  the 
  

   Bermuda 
  Islands, 
  July 
  27, 
  1903. 
  

  

  Type-specimen. 
  — 
  Cat. 
  No. 
  43595, 
  U.S.N.M. 
  Paratypes, 
  Cat. 
  No. 
  

   42328, 
  U.S.N.M. 
  

  

  Femule. 
  — 
  General 
  body 
  form 
  elliptical, 
  short 
  and 
  wide, 
  apparently 
  

   truncated 
  thi'ough 
  the 
  center 
  of 
  the 
  genital 
  segment 
  and 
  thus 
  pre- 
  

   senting 
  a 
  curious 
  sawed-off 
  appearance. 
  Carapace 
  orbicular, 
  as 
  wide 
  

   as 
  long; 
  dorsal 
  grooving 
  hke 
  that 
  in 
  Caligus, 
  the 
  crossbars 
  of 
  the 
  H 
  

   at 
  the 
  longitudinal 
  center; 
  lateral 
  areas 
  very 
  narrow, 
  only 
  one- 
  third 
  

   as 
  wide 
  as 
  the 
  thoracic 
  area 
  ; 
  posterior 
  sinuses 
  rather 
  deep 
  with 
  flaring 
  

   sides; 
  posterior 
  margin 
  of 
  thoracic 
  area 
  reentrant. 
  Eyes 
  large 
  and 
  

   placed 
  well 
  forward; 
  frontal 
  plate 
  narrow 
  and 
  without 
  Imiules, 
  but 
  

   with 
  a 
  distinct 
  median 
  sinus. 
  

  

  Fourth 
  thorax 
  segment 
  so 
  thoroughly 
  fused 
  with 
  the 
  fifth 
  and 
  

   genital 
  segments 
  as 
  to 
  be 
  indistinguishable 
  except 
  by 
  the 
  fourth 
  legs. 
  

   These 
  three 
  segments 
  are 
  covered 
  wdth 
  a 
  strongly 
  arched 
  dorsal 
  plate 
  

   (probably 
  really 
  a 
  fusion 
  of 
  two 
  plates 
  like 
  that 
  in 
  Homoiotes), 
  which 
  

   is 
  fully 
  as 
  wide 
  as 
  the 
  thoracic 
  area 
  of 
  the 
  carapace, 
  half 
  as 
  long 
  as 
  

   wide, 
  and 
  prolonged 
  at 
  each 
  posterior 
  corner 
  into 
  a 
  short 
  blunt 
  lobe. 
  

   Just 
  in 
  front 
  of 
  each 
  of 
  these 
  lobes 
  on 
  the 
  lateral 
  margin 
  is 
  a 
  large 
  

   plumose 
  seta. 
  From 
  the 
  ventral 
  surface 
  of 
  the 
  genital 
  segment 
  in 
  

   front 
  of 
  the 
  lobes 
  a 
  large 
  conical 
  prong 
  extends 
  backward 
  and 
  out- 
  

   ward 
  on 
  either 
  side 
  to 
  a 
  level 
  with 
  the 
  tips 
  of 
  the 
  anal 
  laminae. 
  These 
  

   prongs 
  are 
  hard 
  and 
  chitinous, 
  perfectly 
  smooth, 
  and 
  are 
  cut 
  off 
  

   obliquely 
  at 
  the 
  tips. 
  In 
  one 
  female 
  there 
  was 
  a 
  single 
  long, 
  non- 
  

   plumose 
  spine 
  near 
  the 
  tip 
  of 
  each 
  prong. 
  Egg-cases 
  wide 
  and 
  about 
  

   as 
  long 
  as 
  the 
  body; 
  eggs 
  large 
  and 
  similar 
  to 
  those 
  of 
  LeiJeoplitheirus 
  

   dissimulatus. 
  

  

  On 
  the 
  midline 
  of 
  the 
  ventral 
  surface, 
  between 
  the 
  bases 
  of 
  the 
  

   prongs, 
  is 
  attached 
  the 
  abdomen. 
  This 
  is 
  one-jointed, 
  somewhat 
  

   trapezoidal 
  in 
  outline, 
  the 
  same 
  width 
  and 
  length, 
  and 
  just 
  shows 
  its 
  

   tip 
  behind 
  the 
  dorsal 
  plate 
  of 
  the 
  genital 
  segment. 
  On 
  either 
  side 
  of 
  

   the 
  anal 
  laminss 
  the 
  abdomen 
  is 
  prolonged 
  into 
  a 
  short 
  blunt 
  lobe, 
  

   half 
  the 
  length 
  of 
  the 
  lamina 
  itself. 
  These 
  laminae 
  are 
  oblong, 
  slightly 
  

   ^videned 
  at 
  the 
  tip, 
  and 
  each 
  is 
  armed 
  with 
  three 
  terminal 
  setae, 
  two 
  

   on 
  the 
  outer 
  margin 
  and 
  one 
  on 
  the 
  inner. 
  

  

  