﻿330 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  9fl 
  

  

  unispinose, 
  the 
  lateral 
  spine 
  on 
  each 
  rather 
  short 
  and 
  acute, 
  and 
  the 
  

   sutural 
  angle 
  feebly 
  produced; 
  surface 
  very 
  densely, 
  coarsely, 
  deeply 
  

   punctate, 
  becoming 
  nearly 
  impunctate 
  near 
  apices, 
  very 
  sparsely 
  

   clothed 
  with 
  rather 
  short, 
  inconspicuous, 
  erect, 
  yellowish 
  hairs. 
  

  

  Body 
  beneath 
  indistinctly 
  punctate, 
  very 
  sparsely, 
  irregularly 
  

   clothed 
  with 
  short, 
  inconspicuous, 
  recumbent, 
  yellowish 
  hairs, 
  with 
  a 
  

   few 
  longer, 
  erect 
  hairs 
  intermixed; 
  femora 
  slender, 
  cylindrical, 
  

   slightly 
  clavate, 
  each 
  armed 
  with 
  a 
  long, 
  acute 
  spine 
  at 
  apex. 
  

  

  Length 
  22 
  mm., 
  width 
  at 
  base 
  of 
  elytra 
  4.5 
  mm. 
  

  

  Type 
  locality. 
  — 
  Rurrenabaque 
  (Beni 
  River), 
  Bolivia. 
  

  

  T^^z/^e.— 
  U.S.N.M. 
  No. 
  57612. 
  

  

  Remarks. 
  — 
  Described 
  from 
  a 
  single 
  specimen 
  collected 
  at 
  the 
  type 
  

   locality 
  during 
  October 
  by 
  William 
  M. 
  Mann 
  in 
  connection 
  with 
  the 
  

   Mulford 
  Biological 
  Exploration 
  during 
  1921-1922. 
  

  

  This 
  species 
  is 
  closely 
  allied 
  to 
  Distenia 
  limhafa 
  Bates, 
  but 
  it 
  differs 
  

   from 
  that 
  species 
  in 
  having 
  the 
  head 
  and 
  pronotum 
  reddish 
  brown 
  

   with 
  only 
  a 
  vague 
  bronzy 
  reflection, 
  the 
  lateral 
  spines 
  on 
  each 
  side 
  of 
  

   the 
  pronotum 
  long 
  and 
  acute, 
  the 
  scutellum 
  yellowish 
  brown, 
  the 
  elytra 
  

   more 
  coarsely 
  and 
  densely 
  punctured 
  and 
  with 
  the 
  apices 
  armed 
  with 
  

   a 
  long, 
  acute, 
  lateral 
  spine, 
  and 
  the 
  antennae 
  brownish 
  black. 
  

  

  DISTENIA 
  SPINIPENNIS. 
  new 
  species 
  

  

  Head, 
  pronotum, 
  scutellum, 
  elytra, 
  and 
  underside 
  of 
  body 
  greenish 
  

   black 
  (elytra 
  slightly 
  more 
  greenish) 
  ; 
  antenna 
  (except 
  first 
  segment 
  

   which 
  is 
  black) 
  and 
  palpi 
  reddish 
  brown; 
  legs 
  pale 
  brownish 
  yellow, 
  

   the 
  femora 
  slightly 
  darker 
  at 
  apices. 
  

  

  Head 
  nearly 
  glabrous, 
  sparsely, 
  irregularl}', 
  indistinctly 
  punctate. 
  

   Antenna 
  one 
  and 
  one-half 
  times 
  as 
  long 
  as 
  body; 
  first 
  segment 
  dis- 
  

   tinctly 
  shorter 
  than 
  third, 
  robust, 
  very 
  strongly 
  clavate, 
  strongly, 
  

   longitudinally 
  depressed 
  on 
  top 
  on 
  basal 
  half, 
  scabrous 
  and 
  coarsely 
  

   punctate 
  basally, 
  and 
  sparsely 
  clothed 
  with 
  long, 
  fine, 
  semierect 
  hairs. 
  

  

  Pronotum, 
  not 
  including 
  lateral 
  spines, 
  slightly 
  longer 
  than 
  wide, 
  

   widest 
  at 
  middle 
  ; 
  sides 
  strongly 
  constricted 
  near 
  base 
  and 
  apex, 
  tri- 
  

   angularly 
  expanded 
  on 
  each 
  side 
  at 
  middle 
  and 
  armed 
  with 
  a 
  rather 
  

   long, 
  acute 
  spine; 
  disk 
  broadly, 
  transversely 
  depressed 
  near 
  anterior 
  

   margin, 
  narrowly, 
  transversely, 
  sinuately 
  grooved 
  near 
  base, 
  narrowly, 
  

   transversely 
  grooved 
  along 
  base, 
  and 
  with 
  three 
  slightly 
  elevated, 
  

   elongate, 
  smooth 
  spaces, 
  one 
  median 
  and 
  one 
  on 
  each 
  side 
  of 
  middle; 
  

   surface 
  sparsely, 
  indistinctly 
  punctate 
  in 
  depressions, 
  and 
  clothed 
  with 
  

   a 
  few 
  short, 
  indistinct, 
  erect 
  hairs. 
  

  

  Elytra 
  at 
  base 
  as 
  wide 
  as 
  pronotum 
  including 
  lateral 
  spines 
  ; 
  sides 
  

   strongly 
  converging 
  from 
  bases 
  to 
  apices, 
  which 
  are 
  unispinose, 
  the 
  

   lateral 
  spine 
  on 
  each 
  long 
  and 
  acute, 
  and 
  the 
  sutural 
  angle 
  rectangu- 
  

   lar; 
  surface 
  coarsely, 
  densely, 
  deeply 
  punctate, 
  becoming 
  nearly 
  im- 
  

  

  