﻿398 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.xx. 
  

  

  abdomen 
  in 
  the 
  female; 
  the 
  extremity 
  strongly 
  clavate 
  in 
  the 
  male 
  and 
  

   considerably 
  recnrved. 
  the 
  supraanal 
  i^late 
  triangular 
  with 
  blunt 
  apex, 
  

   the 
  sides 
  nearly 
  straight, 
  feebly 
  eraarginate 
  just 
  l)efore 
  the 
  middle, 
  but 
  

   scarcely 
  at 
  all 
  elevated, 
  the 
  median 
  carina 
  very 
  deep 
  in 
  the 
  basal 
  half 
  

   between 
  high 
  and 
  sharp 
  walls, 
  beyond 
  shallow 
  and 
  feeble 
  but 
  percur- 
  

   rent; 
  furcula 
  consisting 
  of 
  a 
  pair 
  of 
  approximate, 
  minute, 
  slender, 
  par- 
  

   allel, 
  blunt 
  fingers, 
  no 
  longer 
  than 
  the 
  last 
  dorsal 
  segment; 
  cerci 
  very 
  

   long 
  and 
  slender, 
  exteriorly 
  a 
  little 
  tumid, 
  bent 
  arcuate, 
  tapering 
  

   gradually 
  to 
  the 
  middle 
  to 
  less 
  than 
  half 
  the 
  basal 
  breadth, 
  then 
  bent 
  

   roundly 
  inward 
  and 
  thereafter 
  equal, 
  blunt-tipped, 
  their 
  tips 
  meeting 
  

   over 
  the 
  apex 
  of 
  the 
  supraanal 
  plate; 
  subgenital 
  plate 
  short, 
  slightly 
  

   broader 
  apically 
  than 
  at 
  base, 
  almost 
  twice 
  as 
  long 
  as 
  broad, 
  the 
  lateral 
  

   margins 
  strongly 
  rounded 
  at 
  base, 
  with 
  the 
  apical 
  margin, 
  as 
  seen 
  from 
  

   above, 
  very 
  strongly 
  rounded, 
  not 
  elevated, 
  entire. 
  

  

  Length 
  of 
  body, 
  male, 
  18 
  mm., 
  female, 
  22 
  mm.; 
  antennae, 
  male, 
  8.75 
  

   mm., 
  female, 
  8 
  mm.; 
  pronotum, 
  male, 
  4.2 
  mm., 
  female, 
  5.25 
  nmi.; 
  hind 
  

   femora, 
  male, 
  10.5 
  mm., 
  female, 
  12.5 
  mm. 
  

  

  Two 
  males, 
  4 
  females. 
  Comancho, 
  Zacatecas, 
  Mexico 
  (L. 
  Bruner); 
  

   San 
  Luis 
  Potosi, 
  Mexico, 
  E. 
  Palmer; 
  Mount 
  Alvarez, 
  San 
  Luis 
  Potosi, 
  

   Mexico, 
  E. 
  Palmer. 
  

  

  By 
  the 
  kindness 
  of 
  Doctor 
  Aurivillius 
  of 
  Stockholm, 
  I 
  am 
  able 
  to 
  

   illustrate 
  the 
  male 
  abdomen 
  of 
  Stal's 
  type 
  (fig. 
  9), 
  which 
  I 
  should 
  have 
  

   been 
  unable 
  to 
  identify 
  with 
  certainty 
  from 
  the 
  rather 
  meager 
  descrip- 
  

   tion. 
  I 
  do 
  not 
  find 
  the 
  apex 
  of 
  the 
  hind 
  tibiae 
  black, 
  as 
  St^l 
  states 
  

   them 
  to 
  be. 
  

  

  30. 
  APTENOPEDES. 
  

  

  (AitTi'jv, 
  unfledged; 
  Ttr/ddoa, 
  to 
  leap.) 
  

  

  Aptenopedes 
  Scudder, 
  Proc. 
  Bost. 
  Soc. 
  Nat. 
  Hist., 
  XIX 
  (1877), 
  pp. 
  83-84. 
  

  

  Body 
  compressed, 
  especially 
  in 
  the 
  female, 
  where 
  it 
  is 
  also 
  feebly 
  

   fusiform, 
  feebly 
  pilose. 
  Head 
  projecting, 
  front 
  strongly 
  oblique, 
  whole 
  

   summit 
  of 
  head 
  horizontal, 
  scarcely 
  convex, 
  triangular; 
  eyes 
  nearly 
  

   meeting 
  above, 
  especially 
  in 
  the 
  male, 
  where 
  they 
  are 
  separated 
  by 
  a 
  

   space 
  not 
  wider 
  than 
  the 
  narrowest 
  part 
  of 
  the 
  frontal 
  costa, 
  the 
  fastig- 
  

   jum 
  in 
  front 
  of 
  them 
  laterally 
  expanded 
  and 
  slightly 
  tumid; 
  front 
  sub- 
  

   appressed, 
  particularly 
  in 
  the 
  female, 
  almost 
  straight; 
  eyes 
  long 
  oval, 
  

   moderately 
  prominent, 
  in 
  the 
  female 
  depressed 
  and 
  tapering 
  above; 
  

   antennae 
  moderately 
  slender, 
  linear, 
  subdepressed, 
  about 
  as 
  long 
  as 
  

   (female) 
  or 
  slightly 
  longer 
  than 
  (male) 
  the 
  head 
  and 
  pronotum 
  together; 
  

   palpi 
  rather 
  small, 
  the 
  last 
  joint 
  nearly 
  cylindrical, 
  not 
  in 
  the 
  least 
  

   expanded. 
  Pronotum 
  regularly 
  expanding 
  posteriorly 
  in 
  the 
  female, 
  

   only 
  expanding 
  at 
  the 
  very 
  tip 
  and 
  then 
  but 
  slightly 
  in 
  the 
  male; 
  front 
  

   margin 
  slightly 
  convex, 
  hind 
  margin 
  slightly 
  and 
  angularly 
  excised; 
  

   surface 
  uniformly 
  rugulose, 
  tectiform, 
  especially 
  in 
  the 
  female, 
  the 
  

   median 
  carina 
  distinct 
  but 
  not 
  prominent, 
  the 
  lateral 
  carinae 
  wholly 
  

  

  