﻿104 
  

  

  yellowish. 
  Tegmina 
  and 
  wings 
  hyaline, 
  veins 
  pale 
  fuscous. 
  Legs 
  yellow- 
  

   ish 
  brown, 
  femora 
  basally 
  more 
  or 
  less 
  piceous. 
  Vertex 
  fiat, 
  transverse, 
  

   foreinargin 
  truncate, 
  mediolongitudinally 
  narrowly 
  sulculate 
  and 
  shallowly 
  

   pitted 
  on 
  each 
  side 
  nearer 
  the 
  base. 
  Head 
  nearly 
  as 
  wide 
  as 
  thorax, 
  frontal 
  

   cones 
  rounded 
  apically. 
  Pronotum 
  scarcely 
  as 
  wide 
  as 
  vertex, 
  very 
  short. 
  

   Dorsulum 
  longer 
  than 
  wide, 
  suboval, 
  narrower 
  than 
  the 
  mesonotum, 
  

   which 
  is 
  transverse. 
  Scutellum 
  small. 
  Tegmen 
  about 
  2f 
  times 
  as 
  long 
  

   as 
  wide 
  in 
  form 
  like 
  that 
  of 
  T. 
  koebelei 
  Kirkaldy 
  and 
  with 
  similar 
  venation, 
  

   except 
  that 
  the 
  brachial 
  (lower 
  branch 
  of 
  cubital) 
  forks 
  basal 
  of 
  the 
  middle. 
  

   S 
  largely 
  orange 
  yellow. 
  Head 
  dorsally 
  yellow 
  cinereous 
  with 
  a 
  line 
  

   down 
  the 
  middle 
  as 
  in 
  the 
  other 
  sex. 
  Cones 
  bright 
  orange. 
  Nota 
  orange 
  

   brown, 
  rather 
  feebly 
  lined 
  with 
  fuscous 
  and 
  yellow 
  brown. 
  Tegmina 
  and 
  

   legs 
  as 
  in 
  the 
  9 
  , 
  but 
  the 
  veins 
  of 
  the 
  former 
  yellower. 
  Abdomen 
  ferrugi- 
  

   nous, 
  last 
  tergite 
  deeply 
  excavated 
  apicall}'-, 
  wavily 
  refiexed, 
  the 
  reflexed 
  

   part 
  creamy; 
  genital 
  segment 
  diamond 
  shaped. 
  

  

  Length 
  to 
  apex 
  of 
  abdomen 
  2| 
  mill. 
  ; 
  to 
  apex 
  of 
  tegmina 
  folded 
  5» 
  mill. 
  

  

  Hab. 
  Viti, 
  Rewa 
  (III 
  06. 
  Muir 
  1^299). 
  

   2. 
  vanuae 
  sp. 
  nov. 
  

  

  9 
  yellowish, 
  abdomen 
  (except 
  genital 
  segment) 
  black. 
  Head 
  dorsally 
  

   with 
  a 
  very 
  slender 
  black 
  sulculation, 
  ocelli 
  orange 
  red. 
  Pronotum 
  very 
  

   transverse, 
  dbtuse-angularly 
  emarginate 
  posteriorly, 
  very 
  narrowly 
  mar- 
  

   gined 
  there 
  with 
  black. 
  Dorsulum 
  about 
  as 
  long 
  as 
  mesonotum 
  and 
  

   scutellum 
  together, 
  scarcely 
  longer 
  than 
  wide. 
  Tegmina 
  in 
  form 
  like 
  

   T. 
  vitiensis, 
  hyaline, 
  veins 
  yellowish 
  fuscous, 
  venation 
  like 
  that 
  of 
  T. 
  

   koebelei 
  but 
  the 
  median 
  (upper 
  branch 
  of 
  cubital) 
  forks 
  close 
  to 
  the 
  apex 
  

   of 
  the 
  tegmen. 
  

  

  Length 
  li 
  (to 
  apex 
  of 
  abdomen) 
  and 
  4 
  mill, 
  (to 
  apex 
  of 
  tegmina 
  folded.) 
  

  

  Hab: 
  Viti, 
  Rewa, 
  (III 
  06. 
  Muir, 
  19). 
  

  

  An 
  Extraordinary 
  Leaf-hopper 
  from 
  Mt. 
  Konahuanui, 
  Oahu. 
  

  

  By 
  Otto 
  H. 
  Swezev. 
  

   Dictyophorodelphax 
  gen. 
  nov. 
  

  

  This 
  aberrant 
  genus 
  of 
  Delphacidae 
  is 
  erected 
  for 
  a 
  single 
  

   species 
  discovered 
  on 
  a 
  southern 
  ridge 
  of 
  Mt. 
  Konahuanui, 
  Oahu, 
  

   February, 
  1906. 
  The 
  genus 
  is 
  chiefly 
  distinguished 
  from 
  other 
  

   genera 
  of 
  Delphacidae 
  by 
  the 
  extremely 
  long, 
  narrow, 
  forward 
  

   prolongation 
  of 
  the 
  head 
  giving 
  it 
  a 
  superficial 
  resemblance 
  to 
  

   Scolops, 
  or 
  some 
  others 
  of 
  the 
  Dictyophorinae. 
  Its 
  position 
  in 
  

   Delphacidae 
  is 
  determined 
  by 
  the 
  presence 
  of 
  a 
  movable 
  spur 
  at 
  

   the 
  apex 
  of 
  posterior 
  tibia. 
  

  

  The 
  prolongation 
  of 
  the 
  head 
  is 
  as 
  long 
  as 
  the 
  rest 
  of 
  the 
  

   insect. 
  It 
  is 
  narrow 
  and 
  tapers 
  gradually 
  to 
  a 
  blunt 
  apex. 
  It 
  

   has 
  a 
  median 
  carina 
  ventrallv; 
  two 
  lateral 
  carinae, 
  the 
  ventral 
  

  

  