﻿16 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  ing 
  of 
  a 
  pair 
  of 
  scarcely 
  projecting 
  rather 
  distant 
  rounded 
  lobes; 
  cerci 
  

   styliform, 
  slender, 
  gently 
  tapering 
  to 
  a 
  rather 
  blunt 
  point, 
  conical, 
  

   straight 
  or 
  feebly 
  in(;nrved 
  apically, 
  fully 
  as 
  long 
  as 
  the 
  plate; 
  infra- 
  

   cereal 
  plate 
  slightly 
  developed, 
  concealed 
  when 
  the 
  cerci 
  are 
  appressed. 
  

  

  Length 
  of 
  body, 
  male, 
  l.> 
  mm., 
  female, 
  10.75 
  mm.; 
  antennae, 
  male, 
  

   5.75 
  mm., 
  female, 
  0.5-|- 
  mm.; 
  hind 
  femora, 
  male, 
  7 
  mm., 
  female, 
  9.5 
  mm. 
  

  

  One 
  male, 
  one 
  female. 
  Jacksonville, 
  Dnval 
  County, 
  Florida, 
  Ash- 
  

   mead 
  (L. 
  Brnner; 
  U.S.N.M. 
  [No. 
  701 
  J). 
  

  

  2. 
  NETROSOMA, 
  new 
  genus. 
  

   {vijrpov, 
  a 
  spindle; 
  6a)/iia, 
  body.) 
  

  

  Body 
  subfusiform, 
  especially 
  in 
  the 
  fennile, 
  compressed 
  cylindrical, 
  

   glabrous 
  but 
  very 
  sparsely 
  pilose. 
  Head 
  not 
  prominent, 
  the 
  genae 
  

   tumescent, 
  the 
  vertex 
  considerably 
  arched, 
  slightly 
  elevated 
  above 
  the 
  

   level 
  of 
  .the 
  pronotum, 
  the 
  fastigium 
  very 
  narrow 
  in 
  the 
  male, 
  rather 
  

   narrow 
  in 
  the 
  female, 
  gently 
  descending, 
  deeply 
  sulcate, 
  the 
  face 
  retreat- 
  

   ing 
  somewhat, 
  particularly 
  in 
  the 
  male; 
  eyes 
  rather 
  prominent, 
  broad 
  

   oval, 
  half 
  as 
  long 
  again 
  as 
  the 
  infraocular 
  portion 
  of 
  the 
  genae, 
  at 
  

   least 
  in 
  the 
  male; 
  frontal 
  costa 
  rather 
  prominent 
  and 
  narrowed 
  above, 
  

   below 
  moderately 
  broad, 
  at 
  least 
  as 
  broad 
  as 
  (female) 
  or 
  distinctly 
  

   broader 
  than 
  (male) 
  the 
  interspace 
  between 
  the 
  eyes, 
  with 
  the 
  face 
  

   feebly 
  punctate; 
  antennae 
  with 
  the 
  apical 
  joints 
  depressed, 
  fully 
  half 
  

   (male) 
  or 
  a 
  little 
  less 
  than 
  half 
  (female) 
  as 
  long 
  as 
  the 
  body. 
  Prono- 
  

   tum 
  enlarging 
  considerably 
  and 
  regularly 
  backward, 
  compressed 
  cylin- 
  

   drical, 
  the 
  dorsum 
  well 
  arched 
  transversely, 
  passing 
  quite 
  insensibly 
  

   into 
  the 
  vertical 
  lateral 
  lobes, 
  with 
  the 
  feeblest 
  possible 
  signs 
  of 
  a 
  

   median 
  carina, 
  both 
  front 
  and 
  hind 
  margins 
  truncate, 
  the 
  sparsely 
  but 
  

   distinctly 
  and 
  tinely 
  punctate 
  prozona 
  about 
  twice 
  as 
  long 
  as 
  the 
  simi- 
  

   larly 
  but 
  more 
  densely 
  punctate 
  metazona, 
  the 
  transverse 
  sulci 
  oblit- 
  

   erated 
  on 
  the 
  dorsum. 
  Prosternal 
  spine 
  erect, 
  conical, 
  in 
  the 
  female 
  

   appressed; 
  interval 
  between 
  mesosternal 
  lobes 
  transverse, 
  as 
  broad 
  as 
  

   or 
  broader 
  than 
  the 
  lobes 
  in 
  both 
  sexes, 
  the 
  metaslsernal 
  lobes 
  subat- 
  

   tingent 
  (male) 
  or 
  approximate 
  (female). 
  Tegmina 
  lateral 
  and 
  linear, 
  

   shorter 
  than 
  the 
  pronotum, 
  or 
  wanting. 
  Fore 
  and 
  middle 
  femora 
  of 
  

   male 
  not 
  at 
  all 
  tumid; 
  hind 
  femora 
  short 
  but 
  not 
  very 
  stout, 
  the 
  hind 
  

   tibiae 
  with 
  eight 
  spines 
  in 
  the 
  outer 
  series. 
  Extremity 
  of 
  male 
  abdo- 
  

   men 
  feebly 
  clavate 
  and 
  a 
  little 
  upturned, 
  the 
  subgenital 
  plate 
  with 
  lat- 
  

   eral 
  margins 
  straight 
  from 
  the 
  very 
  base, 
  with 
  a 
  slight 
  tubercle 
  at 
  tip 
  

   which 
  scarcely 
  surpasses 
  the 
  supraanal 
  plate; 
  cercilaminate, 
  of 
  mod- 
  

   erate 
  breadth, 
  inferiorly 
  acuminate 
  and 
  turned 
  downward 
  at 
  tip; 
  

   furcula 
  wanting. 
  

  

  Two 
  species 
  are 
  known, 
  both 
  from 
  Mexico. 
  

  

  X./usi/ortnis 
  may 
  be 
  regarded 
  as 
  the 
  type. 
  

  

  