﻿al-t. 
  11 
  REVIEW 
  OF 
  OSORIINI 
  BEETLES 
  NOTMAN 
  5 
  

  

  ORYSSOMMA 
  SCHWARZI, 
  new 
  species 
  

  

  Form 
  somewhat 
  robust, 
  cylindrical. 
  Color 
  rufo-testaceous; 
  head, 
  

   apices 
  of 
  the 
  elytra 
  and 
  the 
  fourth 
  and 
  fifth 
  abdominal 
  segments 
  

   darker, 
  piceous. 
  Integuments 
  above 
  smooth 
  and 
  strongly 
  shining; 
  

   head 
  with 
  sparse 
  umbilicate 
  setiferous 
  punctures, 
  thorax 
  with 
  a 
  

   few 
  coarse 
  umbilicate 
  punctures 
  bearing 
  long 
  bristles 
  and 
  more 
  

   numerous 
  fine 
  punctures 
  with 
  short 
  hairs; 
  head 
  beneath 
  and 
  lat- 
  

   erally 
  behind 
  the 
  eyes 
  and 
  the 
  sterna 
  distinctly 
  and 
  rather 
  coarsely 
  

   reticulate; 
  abdomen 
  coarsely 
  reticulate, 
  with 
  rather 
  long, 
  sparse 
  

   pubescence, 
  mixed 
  with 
  finer 
  and 
  denser 
  pubescence. 
  Head 
  large, 
  

   slightly 
  transverse, 
  scarcely 
  narrower 
  than 
  the 
  thorax 
  at 
  apex. 
  An- 
  

   tennae 
  reaching 
  the 
  middle 
  of 
  the 
  thorax, 
  second 
  joint 
  as 
  long 
  as 
  

   the 
  next 
  two 
  and 
  a 
  little 
  thicker, 
  third 
  joint 
  one-half 
  longer 
  than 
  

   wide 
  and 
  nearly 
  twice 
  as 
  long 
  as 
  the 
  fourth, 
  fourth 
  subglobular, 
  

   succeeding 
  joints 
  gradually 
  larger, 
  not 
  transverse, 
  terminal 
  joint 
  

   scarcely 
  as 
  long 
  as 
  the 
  preceding 
  two. 
  Thorax 
  slightly 
  transverse, 
  

   sides 
  narrowing 
  and 
  feebly 
  arcuate 
  from 
  near 
  the 
  anterior 
  angles 
  

   to 
  the 
  base, 
  angles 
  all 
  distinct 
  but 
  somewhat 
  rounded 
  and 
  obtuse; 
  

   side 
  margins 
  very 
  fine, 
  a 
  feeble, 
  rounded 
  impression 
  in 
  the 
  posterior 
  

   angles. 
  Elytra 
  conjointly 
  slightly 
  longer 
  than 
  wide, 
  as 
  wide 
  as 
  the 
  

   thorax 
  and 
  one-fifth 
  longer; 
  sides 
  parallel, 
  suture 
  margined 
  and 
  

   rather 
  broadly 
  impressed. 
  Abdomen 
  parallel, 
  not 
  wider 
  than 
  the 
  

   thorax. 
  Length 
  1.75 
  mm., 
  width 
  .4 
  mm. 
  One 
  specimen. 
  

  

  Type 
  locality. 
  — 
  Cacao, 
  Trece 
  Aguas, 
  Alta 
  V. 
  Paz, 
  Guatemala, 
  

   April 
  18, 
  1906. 
  (Schwarz 
  and 
  Barber, 
  collectors). 
  

  

  Type.— 
  Cat. 
  No. 
  26350, 
  U.S.N.M. 
  

  

  It 
  is 
  interesting 
  to 
  note 
  the 
  difference 
  in 
  the 
  arrangement 
  of 
  the 
  

   bristles 
  on 
  the 
  labrum 
  in 
  the 
  two 
  last-described 
  genera. 
  In 
  Oalo- 
  

   glene 
  they 
  are 
  in 
  a 
  marginal 
  row 
  whereas 
  in 
  Oryssomma 
  they 
  are 
  

   scattered 
  over 
  the 
  disk. 
  

  

  Genus 
  OSORIUS 
  Latreille 
  

  

  The 
  following 
  sjmopsis 
  has 
  been 
  prepared 
  by 
  an 
  examination 
  of 
  

   the 
  specimens 
  available 
  and 
  supplemented 
  by 
  a 
  study 
  of 
  the 
  original 
  

   descriptions. 
  The 
  key 
  contains 
  all 
  the 
  species 
  known 
  to 
  occur 
  in 
  

   the 
  Americas, 
  but 
  inasmuch 
  as 
  no 
  additional 
  information 
  could 
  be 
  

   added 
  concerning 
  many 
  of 
  the 
  species, 
  it 
  has 
  not 
  been 
  considered 
  

   advisable 
  to 
  discuss 
  these 
  farther 
  on 
  in 
  the 
  text. 
  The 
  species 
  known 
  

   only 
  from 
  the 
  original 
  descriptions 
  are 
  marked 
  with 
  an 
  asterisk. 
  

   After 
  the 
  key 
  there 
  are 
  descriptions 
  of 
  the 
  new 
  forms 
  and 
  a 
  list 
  of 
  

   the 
  species 
  available 
  with 
  their 
  distribution 
  based 
  on 
  the 
  material 
  

   before 
  me. 
  Following 
  this 
  is 
  an 
  alphabetical 
  list 
  of 
  the 
  species 
  of 
  

   Osorius 
  described 
  from 
  North 
  and 
  South 
  America. 
  

  

  