﻿44 
  PEOCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.xx. 
  

  

  plate 
  of 
  male 
  triangular, 
  with 
  tlie 
  lateral 
  margins 
  sliglitly 
  convex 
  in 
  

   the 
  middle 
  (scarcely 
  shown 
  in 
  the 
  figure), 
  with 
  a 
  pair 
  of 
  slightly 
  dis- 
  

   tant, 
  short, 
  longitudinal, 
  subapical 
  ridges; 
  furcula 
  consisting 
  of 
  a 
  pair 
  

   of 
  attingent, 
  depressed, 
  equal, 
  parallel, 
  blunt 
  tipped 
  fingers, 
  less 
  than 
  

   a 
  third 
  as 
  long 
  as 
  the 
  supraanal 
  plate; 
  cerci 
  simple, 
  conical, 
  pointed, 
  

   hardly 
  half 
  as 
  long 
  as 
  the 
  supraanal 
  plate. 
  

  

  Length 
  of 
  body, 
  male, 
  13 
  mm., 
  female, 
  20 
  mm.; 
  antennae, 
  nuile 
  and 
  

   female, 
  7 
  mm.; 
  hind 
  femora, 
  male, 
  9 
  mm., 
  female, 
  10.5 
  mm. 
  

  

  Four 
  males, 
  5 
  females. 
  Fort 
  Worth, 
  Tarrant 
  County, 
  Texas, 
  May, 
  

   ([Xo. 
  705] 
  U.S.N.M 
  , 
  — 
  Kiley 
  collection); 
  Columbus, 
  Colorado 
  County, 
  

   Texas, 
  June 
  21 
  (the 
  same); 
  southwest 
  Texas, 
  Schaupp 
  (L. 
  Bruner); 
  

   Uvalde, 
  Texas, 
  last 
  week 
  of 
  July, 
  E. 
  Palmer. 
  

  

  This 
  species 
  resembles 
  P. 
  punctata 
  to 
  such 
  a 
  degree 
  as 
  with 
  difficulty 
  

   to 
  be 
  distinguished 
  from 
  it, 
  except 
  by 
  the 
  abdominal 
  appendages 
  of 
  the 
  

   male, 
  w^hich 
  are 
  remarkably 
  distinct. 
  There 
  is 
  no 
  sign 
  in 
  the 
  female 
  of 
  

   the 
  dark 
  mediodorsal 
  fusiform 
  j^atch 
  on 
  the 
  pronotum, 
  and 
  the 
  coloring 
  

   of 
  the 
  female 
  in 
  both 
  species 
  is 
  very 
  variable. 
  

  

  There 
  are 
  two 
  other 
  forms 
  of 
  Paraidemona 
  known 
  to 
  me, 
  which 
  I 
  

   deem 
  i)robal)ly 
  distinct 
  from 
  either 
  of 
  the 
  above, 
  but 
  being 
  known 
  

   only 
  by 
  the 
  female, 
  I 
  only 
  allude 
  to 
  them. 
  Both 
  have 
  relatively 
  heavy 
  

   hind 
  femora. 
  

  

  One 
  is 
  almost 
  wholly 
  olivaceous, 
  the 
  abdominal 
  carina 
  marked 
  with 
  

   yellow, 
  and 
  with 
  yellow 
  shades 
  upon 
  the 
  sides 
  of 
  the 
  dorsum 
  of 
  the 
  

   thorax; 
  it 
  comes 
  from 
  Carrizo 
  Springs, 
  Texas 
  (U.S.N.M.). 
  

  

  The 
  other 
  is 
  almost 
  wholly 
  yellowish 
  testaceous, 
  with 
  no 
  dorsal 
  stripe 
  

   and 
  relatively 
  feeble 
  and 
  fleeting 
  lateral 
  stripes; 
  it 
  comes 
  from 
  Dallas, 
  

   Texas 
  (U.S.X.M.), 
  and 
  Yenis 
  Mecas, 
  San 
  Luis 
  Potosi, 
  Mexico, 
  January 
  

   C, 
  E. 
  Palmer. 
  

  

  13. 
  AIDEMONA. 
  

   {aid)'/^ioov, 
  modest.) 
  

   Aidemona 
  Brunxer, 
  R6v. 
  Syst. 
  Ortli., 
  1893, 
  p. 
  145. 
  

  

  Body 
  compact, 
  moderately 
  slender, 
  parallel 
  sided 
  but 
  enlarged 
  at 
  the 
  

   mesothorax. 
  Head 
  not 
  prominent, 
  the 
  vertex 
  well 
  rounded, 
  rising 
  

   above 
  the 
  level 
  of 
  the 
  pronotum, 
  the 
  space 
  between 
  the 
  eyes 
  narrow 
  

   but 
  not 
  very 
  narrow, 
  the 
  face 
  broadly 
  rouiuied 
  and 
  a 
  little 
  retreating; 
  

   frontal 
  costa 
  a 
  little 
  prominent 
  above, 
  broad, 
  much 
  broader 
  than 
  the 
  

   interspace 
  between 
  the 
  eyes, 
  i)lane, 
  percurrent, 
  subequal, 
  and 
  heavily 
  

   punctate; 
  eyes 
  moderately 
  prominent 
  but 
  little 
  more 
  so 
  in 
  the 
  male 
  

   than 
  in 
  the 
  female, 
  rather 
  large, 
  broad 
  ovate, 
  much" 
  larger 
  than 
  the 
  

   subocular 
  portion 
  of 
  the 
  geuae; 
  antennae 
  slender, 
  rather 
  shorter 
  than 
  

   the 
  head 
  and 
  pronotum 
  together. 
  Pronotum 
  scarcely 
  enlarging 
  poste- 
  

   riorly, 
  transversely 
  quadrate, 
  the 
  dorsum 
  plane 
  or 
  very 
  feebly 
  convex, 
  

   with 
  the 
  lateral 
  lobes 
  set 
  sharply 
  at 
  right 
  angles 
  to 
  it, 
  but 
  otherwise 
  

   with 
  no 
  raised 
  lateral 
  carinae, 
  a 
  feeble 
  median 
  carina 
  on 
  metazoua 
  only, 
  

  

  