﻿108 
  PRO 
  CEEDING 
  S 
  OF 
  THE 
  NA 
  TIONA 
  L 
  MVSE 
  UM. 
  vol. 
  xx. 
  

  

  narrower 
  than 
  tlie 
  lobes 
  in 
  both 
  sexes, 
  the 
  metasternal 
  lobes 
  approxi- 
  

   mate 
  (male) 
  or 
  subapproximate 
  (female). 
  Tegmina 
  distinctly 
  (male) 
  or 
  

   scarcely 
  (female) 
  shorter 
  than 
  the 
  i)roMotum, 
  lateral, 
  rather 
  widely 
  sep- 
  

   arated, 
  subovate 
  with 
  rotuudato 
  angulate 
  costal 
  margin 
  and 
  subacumi- 
  

   nate 
  apex, 
  brownish 
  fuscous. 
  Fore 
  and 
  middle 
  femora 
  no 
  more 
  tumid 
  

   in 
  the 
  male 
  than 
  in 
  the 
  female; 
  hind 
  femora 
  ferrugiueo 
  testaceous, 
  

   faintly 
  and 
  angularly 
  bifasciate 
  with 
  fuscous, 
  the 
  under 
  surface 
  tlavous, 
  

   the 
  genicular 
  arc 
  broadly 
  piccous; 
  hind 
  tibiae 
  pale 
  yellowish 
  red, 
  with 
  

   a 
  fuscous 
  patellar 
  spot, 
  the 
  spines 
  black 
  almost 
  to 
  their 
  base, 
  ten 
  to 
  

   eleven 
  in 
  number 
  in 
  the 
  outer 
  series. 
  Extremity 
  of 
  male 
  abdomen 
  a 
  

   little 
  clavate, 
  slightly 
  recurved, 
  the 
  supraanal 
  plate 
  triangular 
  with 
  

   acutangulate 
  apex, 
  the 
  surface 
  strongly 
  but 
  broadly 
  tectate, 
  the 
  median 
  

   sulcus 
  broad, 
  moderately 
  deep, 
  with 
  very 
  rounded 
  walls, 
  percurrent 
  

   but 
  partially 
  interrupted 
  beyond 
  the 
  middle; 
  furcula 
  consisting 
  of 
  a 
  

   pair 
  of 
  rather 
  slender, 
  tapering 
  and 
  acuminate, 
  parallel, 
  approximate 
  

   fingers 
  a 
  little 
  longer 
  than 
  the 
  last 
  dorsal 
  segment, 
  overlying 
  the 
  sub- 
  

   median 
  ridges 
  of 
  the 
  supraanal 
  plate; 
  cerci 
  small, 
  simple, 
  substyliform, 
  

   a 
  little 
  comi^ressed, 
  considerably 
  shorter 
  than 
  the 
  supraanal 
  i)late, 
  

   blunt- 
  tipped 
  or 
  narrowly 
  truncate; 
  subgenital 
  plate 
  small, 
  of 
  about 
  

   equal 
  length 
  and 
  breadth, 
  the 
  lateral 
  and 
  apical 
  margins 
  in 
  the 
  same 
  

   plane, 
  entire, 
  as 
  seen 
  from 
  above 
  strongly 
  rounded, 
  subangulate. 
  

  

  Length 
  of 
  body, 
  male, 
  17 
  mm., 
  female, 
  18.5 
  mm.; 
  antennae, 
  male, 
  

   mm., 
  female, 
  0.6 
  mm.; 
  tegmina, 
  male, 
  3.1 
  mm., 
  female, 
  4.5 
  mm.; 
  hind 
  

   femora, 
  male, 
  9.5 
  mm., 
  female, 
  10 
  mm. 
  

  

  One 
  male, 
  1 
  female. 
  American 
  Fork 
  Canyon, 
  Utah, 
  A. 
  S. 
  Packard. 
  

  

  This 
  species 
  is 
  the 
  nearest 
  allied 
  of 
  the 
  American 
  forms 
  to 
  Podisma 
  

   pedestris 
  of 
  Europe, 
  but 
  differs 
  distinctly 
  from 
  it 
  in 
  the 
  structure 
  of 
  

   the 
  subgenital 
  plate 
  and 
  the 
  slender 
  fore 
  and 
  middle 
  femora 
  of 
  the 
  

   male. 
  

  

  7. 
  PODISMA 
  MARSHALLII. 
  

  

  (Plate 
  VII, 
  fig. 
  9.) 
  

  

  Pezotettix 
  marshallii 
  Thomas, 
  Rep. 
  Geogr. 
  Surv. 
  100th 
  mer.,V 
  (1875), 
  pp. 
  889- 
  

   890, 
  pi. 
  XLV, 
  fig. 
  3.— 
  Scudder!, 
  Proc. 
  Bost. 
  Soc. 
  Nat. 
  Hist., 
  XX 
  (1879), 
  p. 
  86; 
  

   Cent. 
  Orth. 
  (1879), 
  p. 
  75.— 
  Brtner, 
  Rep. 
  U.S. 
  Ent. 
  Comm., 
  Ill 
  (1883), 
  p. 
  59. 
  

  

  Brownish 
  fuscous 
  above, 
  often 
  more 
  or 
  less 
  ferruginous, 
  sordid 
  tes- 
  

   taceous 
  beneath. 
  Head 
  fusco- 
  or 
  ferrugineo-olivaceous, 
  more 
  or 
  

   less 
  infuscated 
  above 
  (the 
  infuscatiou 
  sometimes 
  confined 
  to 
  a 
  jiair 
  of 
  

   widening 
  streaks), 
  with 
  a 
  broader 
  or 
  narrower 
  piceous 
  postocular 
  band 
  ; 
  

   vertex 
  gently 
  tumid, 
  scarcely 
  or 
  not 
  elevated 
  above 
  the 
  prouotum, 
  the 
  

   interspace 
  between 
  the 
  eyes 
  twice 
  (male) 
  or 
  nearly 
  thrice 
  (female) 
  as 
  

   broad 
  as 
  the 
  first 
  antennal 
  Joint; 
  fastigium 
  broad, 
  moderately 
  decli- 
  

   vent, 
  scarcely 
  sulcate; 
  frontal 
  costa 
  rather 
  i)rominent, 
  fading 
  before 
  the 
  

   clypeus, 
  equal, 
  much 
  narrower 
  than 
  the 
  interspace 
  between 
  the 
  eyes, 
  

   l)l;ine, 
  irregularly 
  punctate; 
  eyes 
  of 
  moderate 
  size, 
  slightly 
  prominent 
  

   in 
  the 
  male, 
  somewhat 
  longer 
  than 
  the 
  infraocular 
  portion 
  of 
  the 
  genae; 
  

   antennae 
  dark 
  castaneous, 
  becoming 
  blackish 
  fuscous 
  apically, 
  nearly 
  

   three-fifths 
  (male) 
  or 
  hardly 
  a 
  half 
  (female) 
  as 
  long 
  as 
  the 
  hind 
  femora. 
  

  

  