﻿386 
  FBOCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol. 
  xx. 
  

  

  metazona 
  finely 
  and 
  closely 
  punctate, 
  slightly 
  tumid 
  in 
  the 
  female, 
  

   the 
  angle 
  of 
  the 
  lateral 
  cariuae 
  well 
  rounded, 
  the 
  posterior 
  border 
  

   broadly 
  angulato-couvex, 
  margined; 
  median 
  carina 
  obsolete 
  or 
  sub- 
  

   obsolete 
  throughout. 
  Prosteriial 
  spine 
  slender, 
  straight, 
  acuminate; 
  

   meso- 
  and 
  metastethia 
  together 
  longer 
  than 
  broad; 
  interval 
  between 
  

   mesothoracic 
  lobes 
  distinctly, 
  generally 
  very 
  much, 
  longer 
  than 
  broad, 
  

   generally 
  broader 
  in 
  the 
  female 
  than 
  in 
  the 
  male, 
  the 
  metasternal 
  lobes 
  

   subattingent 
  or 
  approximate, 
  the 
  portion 
  of 
  the 
  metasternum 
  behind 
  

   the 
  lobes 
  small, 
  hardly 
  more 
  than 
  twice 
  as 
  broad 
  as 
  long. 
  Tegmiua 
  

   fully 
  developed 
  in 
  all 
  known 
  species, 
  remarkably 
  uniform 
  in 
  width, 
  

   with 
  the 
  costa 
  very 
  slightly 
  exi)anded 
  near 
  the 
  base, 
  and 
  a 
  strongly 
  

   and 
  uniformly 
  rounded 
  apex. 
  Hind 
  femora 
  moderately 
  slender, 
  with 
  

   immaculate 
  inferior 
  genicular 
  lobes, 
  the 
  tibiae 
  with 
  eight 
  to 
  nine 
  exter- 
  

   nal 
  spines. 
  Cerci 
  of 
  male 
  extremely 
  slender 
  beyond 
  the 
  tapering 
  lami- 
  

   nate 
  base, 
  thefurcula 
  subobsolete; 
  the 
  lateral 
  margins 
  of 
  the 
  subgenital 
  

   plate 
  ampliate 
  at 
  base 
  and 
  the 
  apex 
  provided 
  with 
  a 
  distinct 
  tubercle; 
  

   the 
  pallium 
  often 
  has 
  a 
  pyramidal 
  erection. 
  

  

  P. 
  pieticornis 
  (Thomas) 
  may 
  be 
  regarded 
  as 
  the 
  type. 
  

  

  As 
  far 
  as 
  known, 
  this 
  genus 
  occurs 
  only 
  on 
  the 
  Pacific 
  coast, 
  near 
  

   our 
  southern 
  borders. 
  It 
  is 
  remarkable 
  for 
  the 
  tuberculate 
  abdomen, 
  

   resembling 
  HesperotetU.r, 
  but 
  apical 
  instead 
  of 
  subapical, 
  and 
  for 
  the 
  

   sometimes 
  vivid 
  and 
  always 
  exceptionally 
  variegated 
  colorings 
  of 
  its 
  

   different 
  species. 
  

  

  ANALYTICAL 
  KEY 
  TO 
  THE 
  SPECIES 
  OF 
  POECILOTETTIX. 
  

  

  A'. 
  Antennae 
  annulate 
  and 
  pronotum 
  and 
  femora 
  distinctly 
  and 
  distantly 
  punctate 
  

   with 
  blackish 
  fuscous 
  ; 
  antennae 
  hardly 
  attenuate 
  apically 
  ; 
  eyes 
  of 
  female 
  anteriorly 
  

   truncate; 
  apical 
  tubercle 
  of 
  male 
  abdomen 
  raised 
  above 
  the 
  level 
  of 
  the 
  sides 
  of 
  the 
  

  

  subgenital 
  plate 
  1. 
  xncticornis 
  (p. 
  386). 
  

  

  A-. 
  Antennae 
  concolorous, 
  distinctly 
  attenuate 
  apically; 
  eyes 
  of 
  female 
  auteriorly 
  

   subtruncate; 
  pronotum 
  and 
  femora 
  variegated 
  with 
  red 
  and 
  brown; 
  apical 
  tubercle 
  

   of 
  male 
  abdomen 
  not 
  elevated 
  above 
  the 
  sides 
  of 
  the 
  subgenital 
  plate. 
  

  

  ¥. 
  Relatively 
  stout-bodied, 
  with 
  stout 
  femora; 
  apex 
  of 
  male 
  abdomen 
  with 
  a 
  bifid 
  

  

  tubercle 
  2. 
  sanguineus 
  (p. 
  387). 
  

  

  I)-. 
  Relatively 
  slender-bodied, 
  with 
  slender 
  femora; 
  apex 
  of 
  male 
  abdomen 
  with 
  a 
  

   simple 
  conical 
  tubercle 
  3. 
  coccinatus 
  (p. 
  389). 
  

  

  I. 
  POECILOTETTIX 
  PICTICORNIS. 
  

  

  (Plate 
  XXVI, 
  fig. 
  1.) 
  

  

  Caloptenns 
  (Hesperotettix) 
  iiictkornis 
  Thomas!, 
  Proc. 
  Dav. 
  Acad. 
  Sc, 
  II 
  (1877), 
  

   p. 
  125, 
  pi. 
  IV, 
  figs. 
  1, 
  2. 
  

  

  Ground 
  color 
  very 
  uniform 
  luteo-testaceous, 
  the 
  pronotum 
  and 
  femora 
  

   slightly 
  darker 
  than 
  the 
  tegmina 
  and 
  feebly 
  lustrous. 
  Head 
  distantly 
  

   and 
  coarsely 
  punctate 
  with 
  blackish 
  brown 
  along 
  the 
  carinae 
  of 
  

   the 
  face, 
  the 
  front 
  and 
  inferior 
  margins 
  of 
  the 
  genae 
  and 
  across 
  the 
  

   labrum; 
  pronotum 
  similarly 
  punctate, 
  except 
  upon 
  the 
  dorsum 
  of 
  the 
  

   metazona 
  (though 
  the 
  puncta 
  follow 
  the 
  posterior 
  margin), 
  the 
  puncta 
  

   transversely 
  disposed 
  and 
  in 
  the 
  center 
  ot 
  the 
  lateral 
  lobes 
  more 
  or 
  less 
  

  

  