﻿MAR. 
  4, 
  1922 
  LOOMIS 
  : 
  NEW 
  SPECIKS 
  COLEOPTEROUS 
  GENUS 
  TROX 
  135 
  

  

  one 
  specimen 
  from 
  each 
  of 
  the 
  following 
  localities, 
  — 
  Kncinal 
  ( 
  /. 
  D. 
  Mitchell), 
  

   Santa 
  Rosa 
  {H. 
  S. 
  Barber), 
  El 
  Paso 
  (F. 
  C. 
  Pratt), 
  and 
  Lamesa 
  {E. 
  G. 
  Holt). 
  

  

  Distinguished 
  by 
  the 
  rounded 
  tubercles 
  of 
  the 
  elytra 
  which 
  are 
  seldom 
  

   confluent 
  and 
  in 
  rows 
  of 
  equal 
  size, 
  and 
  also 
  by 
  the 
  size 
  and 
  shape 
  of 
  the 
  

   male 
  genitalia. 
  

  

  Trox 
  inflatus 
  Loomis, 
  sp. 
  nov. 
  Body 
  smaller 
  and 
  more 
  slender 
  than 
  

   scittellaris, 
  elongate-oval; 
  color 
  black 
  and 
  shining 
  when 
  clean. 
  Length 
  14 
  

   to 
  15 
  mm. 
  Habitat, 
  Arizona. 
  

  

  Thorax 
  strongly 
  constricted, 
  in 
  this 
  respect 
  resembling 
  suherosus; 
  hind 
  

   angles 
  broadly 
  rounded 
  and 
  with 
  only 
  a 
  slight 
  emargination 
  of 
  the 
  margin 
  

   in 
  front 
  of 
  them; 
  disc 
  moderately 
  elevated, 
  tubercles 
  distinct, 
  the 
  outer 
  

   ones 
  of 
  the 
  basal 
  series 
  the 
  larger; 
  in 
  front 
  of 
  each 
  are 
  two 
  smaller 
  ones 
  be- 
  

   longing 
  to 
  the 
  anterior 
  series 
  which, 
  with 
  the 
  large 
  median 
  pair, 
  is 
  composed 
  

   of 
  six 
  tubercles. 
  The 
  four 
  rows 
  of 
  elongate 
  and 
  flattened 
  tubercles 
  of 
  the 
  

   elytra 
  hardly 
  to 
  be 
  distinguished 
  from 
  the 
  intervals 
  between 
  them; 
  these 
  

   intervals 
  are 
  raised 
  at 
  short 
  distances 
  into 
  slightly 
  less 
  distinct 
  elevations 
  

   which 
  lack 
  the 
  small 
  tomentose 
  areas 
  following 
  the 
  tubercles 
  of 
  the 
  major 
  

   series; 
  usually 
  a 
  few 
  small 
  spicules 
  in 
  the 
  depressions 
  of 
  the 
  intervals, 
  a 
  

   single 
  spicule 
  located 
  above 
  each 
  of 
  the 
  deep 
  punctures 
  on 
  either 
  side 
  of 
  the 
  

   intervals; 
  elevations 
  of 
  the 
  intervals 
  often 
  confluent 
  with 
  the 
  tubercles 
  of 
  

   the 
  adjacent 
  rows; 
  second 
  series 
  of 
  tubercles 
  ending 
  on 
  apical 
  fourth 
  in 
  a 
  

   faint 
  umbone. 
  Fig. 
  1, 
  D, 
  

  

  Type 
  and 
  allotype 
  No. 
  25200, 
  U. 
  S. 
  National 
  Museum. 
  

  

  Described 
  from 
  two 
  specimens; 
  a 
  male 
  collected 
  in 
  a 
  moist 
  recess 
  among 
  

   rocks 
  on 
  the 
  top 
  of 
  a 
  desert 
  peak 
  near 
  Sacaton, 
  Arizona, 
  November 
  23, 
  1921, 
  

   by 
  H. 
  F. 
  Loomis, 
  and 
  a 
  female 
  collected 
  on 
  Ash 
  Creek 
  in 
  the 
  Graham 
  Moun- 
  

   tains 
  of 
  Arizona, 
  July 
  2, 
  1914, 
  by 
  E. 
  G. 
  Holt. 
  

  

  From 
  the 
  size 
  and 
  general 
  shape 
  of 
  the 
  copulatory 
  organs 
  of 
  the 
  male 
  this 
  

   species 
  is 
  related 
  to 
  scutellaris, 
  but 
  it 
  differs 
  in 
  having 
  the 
  median 
  lobe 
  greatly 
  

   inflated 
  and 
  visible 
  above 
  the 
  lateral 
  lobes 
  when 
  viewed 
  from 
  the 
  side; 
  the 
  

   tip 
  of 
  the 
  median 
  lobe 
  is 
  less 
  slender 
  and 
  the 
  lateral 
  lobes 
  are 
  not 
  abruptly 
  

   constricted 
  on 
  the 
  outer 
  side 
  near 
  the 
  apical 
  third 
  above 
  which 
  the 
  lobes 
  are 
  

   not 
  as 
  greatly 
  expanded. 
  

  

  Trox 
  carinatus 
  Loomis, 
  sp. 
  nov. 
  Form 
  oboval, 
  less 
  compact 
  ; 
  color 
  black, 
  

   surface 
  feebly 
  shining 
  when 
  clean. 
  Length 
  12 
  to 
  13 
  mm. 
  Habitat, 
  south 
  

   central 
  Arizona. 
  

  

  Constriction 
  of 
  thorax 
  longer 
  than 
  in 
  any 
  other 
  species 
  dealt 
  with, 
  emargi- 
  

   nate 
  throughout 
  its 
  length; 
  margin 
  sharply 
  incised 
  in 
  front 
  of 
  hind 
  angles 
  

   which 
  are 
  acute 
  and 
  remote 
  from 
  the 
  humeri 
  ; 
  disc 
  strongly 
  elevated 
  ; 
  tuber- 
  

   culation 
  resembling 
  that 
  of 
  asper 
  though 
  hardly 
  as 
  coarse. 
  Elytra 
  each 
  

   with 
  four 
  prominent 
  carinae 
  replacing 
  the 
  rows 
  of 
  large 
  tubercles, 
  the 
  two 
  

   inner 
  carinae 
  more 
  pronounced; 
  second 
  carina 
  ending 
  on 
  the 
  apical 
  fourth 
  

   in 
  a 
  tomentose 
  and 
  dentiform 
  umbone; 
  all 
  carinae 
  with 
  small 
  tomen- 
  

   tose 
  patches 
  on 
  the 
  outer 
  side; 
  intervals 
  between 
  the 
  suture 
  and 
  the 
  

   first 
  carina, 
  between 
  the 
  carinae 
  themselves 
  and 
  between 
  the 
  last 
  carina 
  

   and 
  the 
  elytral 
  margin 
  each 
  with 
  two 
  rather 
  widely 
  separated 
  rows 
  of 
  large 
  

   and 
  deep 
  punctures 
  ; 
  surface 
  between 
  the 
  rows 
  and 
  between 
  the 
  punctures 
  in 
  

   the 
  rows 
  smooth 
  and 
  evenly 
  rounded. 
  Front 
  tibia 
  with 
  a 
  well 
  developed 
  

   tooth 
  at 
  apical 
  third; 
  upper 
  face 
  with 
  two 
  rows 
  of 
  rather 
  large 
  punctures. 
  

  

  Copulatory 
  organs 
  of 
  the 
  male 
  relatively 
  short 
  and 
  broad; 
  median 
  lobe 
  

  

  