﻿AMERICAN 
  TYPHLOCYBIXAE— 
  GILLETTE. 
  739 
  

  

  uotber 
  on 
  the 
  middle 
  of 
  the 
  corium. 
  Abdomen 
  greenish 
  yellow 
  above 
  

   and 
  below, 
  last 
  ventral 
  segment 
  of 
  female 
  slightly 
  produced 
  and 
  entire 
  

   posteriorly. 
  Legs 
  whitish 
  Mith 
  the 
  tii^s 
  of 
  the 
  tibiae 
  and 
  the 
  tarsi 
  

   blue. 
  (See 
  Figs. 
  78, 
  70.) 
  

   Tifpe.—^o. 
  3431, 
  U.S.N.M. 
  

  

  ' 
  Described 
  from 
  four 
  females 
  and 
  a 
  male 
  taken 
  by 
  the 
  writer, 
  three 
  

   ih 
  Horsetooth 
  Gulch, 
  June 
  15, 
  and 
  two 
  specimens 
  taken 
  on 
  Bald 
  Mount, 
  

   east 
  of 
  Estes 
  Park, 
  August 
  1, 
  all 
  in 
  Colorado. 
  

  

  EMPOASCA 
  ROBUSTA, 
  new 
  species. 
  

  

  Small 
  pale 
  yellowish 
  species, 
  rather 
  robust. 
  Length, 
  2.75 
  mm. 
  

  

  Face 
  smoky 
  ivory-white, 
  without 
  distinct 
  markings, 
  hardly 
  longer 
  

   than 
  broad, 
  clypeus 
  but 
  little 
  exceeding 
  the 
  genae. 
  Vertex 
  consider- 
  

   ably 
  produced, 
  rounded 
  in 
  front, 
  its 
  length 
  equal 
  to 
  one-third 
  the 
  width 
  

   of 
  the 
  head, 
  and 
  three-tifths 
  as 
  long 
  as 
  the 
  pronotum; 
  eyes 
  light 
  brown, 
  

   ocelli 
  deep 
  reddish 
  brown. 
  Pronotum 
  about 
  three-fourths 
  broader 
  than 
  

   long", 
  whitish 
  or 
  yellowish 
  white 
  with 
  two 
  more 
  or 
  less 
  distinct 
  lemon- 
  

   yellow 
  longitudinal 
  lines, 
  and 
  outside 
  of 
  these, 
  back 
  of 
  the 
  compound 
  

   eyes, 
  slight 
  spotting 
  of 
  the 
  same 
  color. 
  In 
  one 
  specimen 
  this 
  lemon- 
  

   yellow 
  coloration 
  is 
  almost 
  entirely 
  wanting. 
  Scutellum 
  pale 
  on 
  the 
  

   middle 
  with 
  the 
  lemon-yellow 
  coloration 
  on 
  the 
  tip 
  and 
  base. 
  Elytra 
  

   whitish 
  subhyaline 
  to 
  near 
  the 
  cross-veins, 
  slightly 
  smoky 
  on 
  the 
  

   cross-veins, 
  immediately 
  before 
  the 
  cross-veins 
  and 
  beyond 
  them 
  trans- 
  

   l)areut, 
  the 
  basal 
  portion 
  of 
  the 
  elytra 
  slightly 
  washed 
  with 
  lemon- 
  

   yellow, 
  which 
  in 
  some 
  individuals 
  is 
  distributed 
  in 
  about 
  three 
  or 
  four 
  

   rather 
  distinct 
  longitudinal 
  lines. 
  Tergum 
  mostly 
  black; 
  venter 
  yel- 
  

   low, 
  with 
  pygofers 
  a 
  little 
  greenish. 
  Feet 
  yellow, 
  with 
  the 
  tibiae 
  and 
  

   tarsi 
  of 
  the 
  second 
  and 
  third 
  pairs 
  greenish. 
  

  

  Tj/^e.— 
  No. 
  3432, 
  U.S.N. 
  M. 
  

  

  Described 
  from 
  four 
  female 
  specimens 
  from 
  the 
  U. 
  S. 
  National 
  Museum 
  

   labeled 
  "Nevada 
  Co., 
  Calif., 
  Sep.," 
  collected 
  by 
  A. 
  Koebele. 
  

  

  EMPOASCA 
  NIGROSCUTA 
  Gillette 
  & 
  Baker. 
  

  

  Empoasca 
  nUjroscuta 
  Gillette 
  ».V 
  Baker, 
  Bull. 
  31, 
  Colo. 
  Ag. 
  Exp. 
  Sta., 
  p. 
  108, 
  1895. 
  

   Female: 
  Clypeus 
  minutely 
  transversely 
  rugose, 
  one-half 
  longer 
  than 
  

   wide, 
  basal 
  suture 
  straight, 
  apex 
  rather 
  i^oiuted; 
  lorae 
  two-thirds 
  as 
  

   long, 
  and 
  one-half 
  as 
  wide 
  as 
  clypeus, 
  distant 
  from 
  tip 
  of 
  clypeus 
  ; 
  geuae 
  

   narrow, 
  a 
  deep 
  sunken 
  furrow 
  beneath 
  the 
  eyes 
  extending 
  to 
  the 
  lorae, 
  

   not 
  attaining 
  tip 
  of 
  clypeus, 
  outer 
  margin 
  nearly 
  straight, 
  very 
  narrow 
  

   below 
  lorae; 
  front 
  smooth, 
  nearly 
  twice 
  longer 
  than 
  wide, 
  one 
  and 
  three- 
  

   fourths 
  the 
  length 
  of 
  the 
  clypeus, 
  superior 
  angle 
  somewhat 
  greater 
  

   than 
  a 
  right 
  angle, 
  rather 
  sharply 
  rounded. 
  Disk 
  of 
  vertex 
  smooth, 
  

   once 
  or 
  one 
  and 
  a 
  half 
  times 
  as 
  long 
  on 
  middle 
  as 
  next 
  eyes. 
  Pronotum 
  

   very 
  minutely 
  transversely 
  wrinkled 
  on 
  posterior 
  three-fourths, 
  ante- 
  

   rior 
  margin 
  broadly 
  rounded, 
  hind 
  margin 
  nearly 
  straight, 
  sides 
  short. 
  

  

  