﻿124 
  PliOCEEDINGS 
  OF 
  THE 
  XATIONAL 
  MUSEUM. 
  vol.xx. 
  

  

  exceptioual 
  diversity 
  for 
  its 
  twenty-two 
  species, 
  while 
  ten 
  series 
  are 
  

   represented 
  in 
  the 
  twenty 
  species 
  hitherto 
  found 
  in 
  Canada. 
  Kearly 
  

   all 
  the 
  scries 
  have 
  a 
  large 
  latitudinal 
  distribution, 
  the 
  most 
  limited 
  

   in 
  this 
  respect 
  being: 
  — 
  in 
  the 
  north, 
  the 
  utahensis 
  series 
  (three 
  species), 
  

   from 
  Washington 
  and 
  Alberta 
  to 
  Utah 
  and 
  Colorado, 
  and 
  the 
  indi- 
  

   gens 
  series 
  (one 
  si^ecies), 
  confined 
  to 
  Idaho; 
  and 
  in 
  the 
  south 
  the 
  

   lakinus 
  series 
  (three 
  si)ecies), 
  from 
  Nebraska 
  to 
  central 
  Mexico, 
  the 
  

   impudicus 
  series 
  (one 
  species), 
  found 
  only 
  in 
  Georgia 
  and 
  Mississippi, 
  

   the 
  aridus 
  series 
  (three 
  species), 
  from 
  Arizona 
  to 
  Jalisco, 
  the 
  puer 
  

   series 
  (two 
  species), 
  found 
  in 
  Texas 
  and 
  Florida, 
  and 
  the 
  inorii;i 
  us 
  

   series 
  (three 
  species), 
  occurring 
  in 
  Illinois, 
  Indiana, 
  JS^orth 
  Carolina, 
  

   and 
  northern 
  Mexico. 
  

  

  ANALYTICAL 
  KEY 
  TO 
  THE 
  SPECIES 
  OF 
  JU-LANOPLUS. 
  ' 
  

  

  A'. 
  Tegmiua 
  couspicuously 
  shorter 
  thau 
  the 
  abdomen, 
  olteu 
  uo 
  longer 
  than 
  prouotum 
  ; 
  

   furcula 
  almost 
  always 
  deyeloped 
  feebly, 
  generally 
  no 
  longer 
  than 
  the 
  hist 
  dorsal 
  seg- 
  

   ment 
  I'rom 
  which 
  it 
  arises. 
  

  

  1)K 
  C'erci 
  of 
  male-expanding 
  from 
  the 
  base 
  outward 
  and 
  bullate, 
  abruptly 
  tapering 
  

   and 
  bent 
  inward 
  at 
  tip; 
  subgenital 
  plate 
  of 
  male 
  abruptly 
  elevated 
  apically 
  

   (1. 
  Lakinus 
  series), 
  

   fi. 
  Interval 
  between 
  niesoaternal 
  lobes 
  of 
  male 
  nearly 
  twice 
  as 
  long 
  as 
  broad 
  ;'- 
  

  

  of 
  female 
  fully 
  half 
  as 
  broad 
  again 
  as 
  long 
  1. 
  viareulenius 
  (p. 
  139). 
  

  

  C-. 
  Interval 
  between 
  mcsosterual 
  lobes 
  of 
  male 
  distinctly 
  less 
  than 
  twice 
  as 
  long 
  

   as 
  broad; 
  of 
  female 
  barely 
  broader 
  or 
  not 
  broader 
  than 
  long. 
  

   d^. 
  Hind 
  femora 
  heavily 
  bilasciate 
  above 
  and 
  on 
  the 
  outer 
  face; 
  hind 
  tibiae 
  

  

  blue 
  throughout 
  2. 
  lakinus 
  (p. 
  141). 
  

  

  d-. 
  Hind 
  femora 
  with 
  feeble 
  signs 
  of 
  bifasciation 
  above 
  only, 
  if 
  at 
  all; 
  hind 
  

  

  tibiae 
  pale 
  red, 
  apically 
  infuscated 
  3. 
  sonorae 
  {p. 
  113). 
  

  

  b'-. 
  Cerci 
  of 
  male 
  tapering 
  in 
  the 
  basal 
  half, 
  usually 
  from 
  the 
  very 
  base, 
  sometimes 
  

   throughout, 
  usually 
  laminate; 
  snbgeuital 
  plate 
  of 
  male 
  of 
  variable 
  elevation 
  

   apically. 
  

  

  c'. 
  Cerci 
  of 
  male 
  beyond 
  the 
  middle 
  either 
  equal 
  or 
  tapering, 
  sometimes 
  simply 
  

   styliform 
  throughout, 
  the 
  tip 
  usually 
  more 
  or 
  less 
  pointed 
  but 
  sometimes 
  broad 
  

   or 
  truncate; 
  nietasterual 
  lobes 
  of 
  male 
  attingeut 
  or 
  subattingent. 
  ' 
  

  

  rfi. 
  Cerci 
  of 
  male 
  very 
  broad 
  and 
  short, 
  not 
  more 
  than 
  twice 
  as 
  long 
  as 
  the 
  

   middle 
  breadth, 
  and 
  broadly 
  rounded 
  at 
  apex 
  (2. 
  Flabellifer 
  series). 
  

   e\ 
  Tegmina 
  about 
  half 
  as 
  long 
  as 
  the 
  abdomen 
  and 
  much 
  longer 
  than 
  pro- 
  

   notum; 
  cerci 
  of 
  male 
  not 
  longitudinally 
  sulcate 
  apically. 
  

   /'. 
  Interval 
  between 
  mtsosternal 
  lobes 
  of 
  male 
  twice 
  as 
  broad 
  posteriorly 
  

   as 
  anteriorly, 
  the 
  inner 
  margins 
  of 
  the 
  lobes 
  regularly 
  divergent; 
  interv;;l 
  

   in 
  female 
  longer 
  than 
  broad; 
  cerci 
  of 
  male 
  but 
  little 
  longer 
  than 
  broad. 
  

  

  7. 
  discolor 
  (p. 
  119). 
  

   /'-. 
  Interval 
  between 
  mesosternal 
  lobes 
  of 
  male 
  of 
  nearly 
  equal 
  breadth 
  in 
  

   front 
  and 
  behiud, 
  the 
  inner 
  margins 
  of 
  the 
  lobea 
  convex; 
  interval 
  iu 
  

   female 
  transverse; 
  cerci 
  of 
  male 
  nearly 
  twice 
  as 
  long 
  as 
  broad. 
  

  

  8. 
  simpler 
  (p. 
  150). 
  

  

  'By 
  permission 
  of 
  the 
  Assistant 
  Secretary, 
  this 
  key 
  has 
  been 
  issued 
  in 
  advance 
  in 
  

   the 
  Proceedings 
  of 
  the 
  American 
  Philosophical 
  Society, 
  XXXVl, 
  No. 
  154. 
  

  

  '■^This 
  interval 
  is 
  of 
  various 
  shapt'S 
  in 
  different 
  species, 
  — 
  cuneiform, 
  clepsydral, 
  or 
  

   rectangular, 
  but 
  for 
  the 
  purposes 
  of 
  this 
  table 
  the 
  muldle 
  breadth 
  is 
  always 
  taken. 
  

  

  3 
  The 
  cerci 
  are 
  faintly 
  enlarged 
  apically 
  in 
  M. 
  mtridioualis 
  and 
  M. 
  icalshii, 
  which 
  

   come 
  under 
  this 
  division. 
  See 
  also 
  the 
  note 
  under 
  tlie 
  alternate 
  category. 
  

  

  