﻿NO. 
  1124. 
  REVISION 
  OF 
  THE 
  AIELANOPLI—SCUDDER. 
  19 
  

  

  all 
  exceeding 
  in 
  length 
  the 
  pronotum. 
  Pronotuni 
  enlarging 
  regularly 
  

   and 
  slightly 
  (male) 
  or 
  considerably 
  (female) 
  from 
  in 
  front 
  backward, 
  the 
  

   disk 
  nearly 
  x)lane, 
  separated 
  by 
  percurrent 
  lateral 
  carinae 
  (as 
  distinct 
  

   as 
  the 
  percurrent 
  median 
  carina) 
  from 
  the 
  subvertical 
  lateral 
  lobes, 
  the 
  

   front 
  and 
  hind 
  border 
  truncate 
  or 
  subtruncate, 
  the 
  nearly 
  smooth 
  

   prozona 
  less 
  than 
  twice 
  as 
  long 
  as 
  the 
  rather 
  feebly 
  punctate 
  metazona, 
  

   rather 
  longer 
  than 
  broad, 
  divided 
  in 
  the 
  middle 
  by 
  a 
  feeble 
  transverse 
  

   sulcus, 
  followed 
  at 
  less 
  than 
  half 
  the 
  distance 
  to 
  tlie 
  metazona 
  by 
  a 
  

   doubly 
  arcuate 
  sulcus 
  at 
  least 
  as 
  distinct. 
  Prosternal 
  spine 
  erect, 
  

   variable; 
  mesosternal 
  lobes 
  separated 
  by 
  an 
  interval 
  which 
  is 
  subquad- 
  

   rate 
  but 
  a 
  little 
  transverse 
  and 
  nearly 
  as 
  broad 
  as 
  the 
  lobes 
  in 
  the 
  

   male, 
  strongly 
  transverse 
  and 
  broader 
  than 
  the 
  lobes 
  in 
  the 
  female, 
  the 
  

   metasternal 
  lobes 
  subapproximate 
  in 
  both 
  sexes. 
  Tegmina 
  elliptical, 
  

   not 
  wholly 
  lateral, 
  shorter 
  than 
  the 
  pronotum. 
  Fore 
  and 
  middle 
  femora 
  

   tumid 
  in 
  the 
  male, 
  the 
  hind 
  femora 
  moderate, 
  compressed, 
  the 
  hind 
  

   tibiae 
  with 
  9-11 
  spines 
  in 
  the 
  outer 
  series. 
  Extremity 
  of 
  the 
  male 
  

   abdomen 
  upturned 
  and 
  slightly 
  enlarged, 
  the 
  subgenital 
  plate 
  strongly 
  

   produced 
  and 
  elongate, 
  its 
  lateral 
  margins 
  feebly 
  convex, 
  meeting 
  api- 
  

   cally 
  at 
  an 
  acute 
  angle 
  which 
  is 
  provided 
  with 
  a 
  slight 
  tubercle 
  and 
  is 
  

   removed 
  at 
  a 
  long 
  distance 
  from 
  the 
  tip 
  of 
  the 
  supraanal 
  plate; 
  furcula 
  

   developed 
  slightly 
  or 
  moderately; 
  cerci 
  very 
  long 
  and 
  very 
  slender, 
  

   laminate, 
  directed 
  inward 
  apically. 
  

  

  Two 
  species 
  are 
  known, 
  coming 
  from 
  Mexico, 
  Central 
  America, 
  and 
  

   northern 
  South 
  America. 
  

  

  ANALYTICAL 
  KEY 
  TO 
  THE 
  SPECIES 
  OF 
  PARADICHKOPLUS. 
  

  

  Prosternal 
  spine 
  quadrate, 
  appressed, 
  truncate; 
  posterior 
  margin 
  of 
  pronotum 
  feebly 
  

   emarginate; 
  inner 
  edges 
  of 
  tegmina 
  separated 
  Ijy 
  half 
  the 
  width 
  of 
  the 
  pronotum; 
  

  

  furcula 
  well 
  developed 
  1. 
  mexicaniis 
  (p. 
  19). 
  

  

  Prosternal 
  spine 
  conical; 
  posterior 
  margin 
  of 
  pronotum 
  entire; 
  inner 
  edges 
  of 
  

   tegmina 
  subattingent 
  ; 
  furcula 
  very 
  slight 
  2. 
  raricolor 
  (p. 
  21). 
  

  

  I. 
  PARADICHKOPLUS 
  MEXICANUS. 
  

  

  (Plate 
  II, 
  figs, 
  4, 
  5.) 
  

  

  Flatyplujma 
  mexicanum 
  Brunner, 
  Verhandl. 
  Zool.-Bot. 
  Gesellsch. 
  Wieu, 
  1861 
  

  

  (1861), 
  p. 
  224; 
  Orth. 
  Stud. 
  (186.1), 
  p. 
  4,— 
  Walkeu, 
  Cat. 
  Derm. 
  Salt. 
  Brit. 
  

  

  Mus., 
  SuppL, 
  V 
  (1871), 
  p. 
  71.— 
  Thomas, 
  Rep. 
  U. 
  S. 
  Geol. 
  Surv. 
  Terr., 
  V 
  (1873), 
  

  

  p. 
  224. 
  

   Calopteniis 
  mexicauus 
  Walker, 
  Cat. 
  Derm. 
  Salt. 
  Brit. 
  Muts., 
  IV 
  (1870), 
  pp. 
  682- 
  

  

  683.— 
  Thomas, 
  Kep. 
  U. 
  S. 
  Geol. 
  Surv. 
  Terr., 
  V 
  (1873), 
  p. 
  227, 
  

   Paradichroplus 
  mexicanus 
  Bruxner, 
  Rev. 
  Syst. 
  Orth. 
  (1893), 
  p. 
  145. 
  

  

  Blackish 
  fuscous 
  above 
  with 
  a 
  strong 
  ferruginous 
  tinge, 
  dull 
  flavous 
  

   below. 
  Head 
  with 
  tumescent 
  genae 
  plumbeous 
  or 
  livid, 
  more 
  or 
  less 
  

   heavily 
  mottled 
  with 
  ferrugineo 
  fuscous, 
  the 
  summit 
  wholly 
  blackish 
  

   fuscous, 
  separated 
  from 
  a 
  broad 
  blackish 
  fuscous 
  band 
  behind 
  the 
  eyes 
  

   by 
  a 
  lighter 
  but 
  obscure 
  stripe 
  behind 
  the 
  upper 
  i)art 
  of 
  the 
  eyes; 
  

   frontal 
  costa 
  rather 
  prominent 
  above, 
  especially 
  in 
  the 
  male, 
  punctate, 
  

  

  