﻿116 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  io3 
  

  

  to 
  form 
  a 
  deep 
  cavity) 
  ; 
  in 
  imperiaJis, 
  these 
  edges 
  are 
  rounded 
  and 
  lead 
  

   straight 
  in 
  without 
  a 
  break 
  or 
  angle. 
  

  

  Type. 
  — 
  In 
  LeConte 
  collection, 
  MCZ, 
  

  

  Type 
  locality. 
  — 
  Mexican 
  Boundary, 
  Laredo 
  to 
  Ringgold 
  Barracks. 
  

  

  Specimens 
  examined. 
  — 
  181. 
  

  

  Distribution. 
  — 
  Kansas: 
  Clark 
  County. 
  Oklahoma: 
  Taloga, 
  Chey- 
  

   enne, 
  *Alva, 
  and 
  *Payne 
  County. 
  Texas: 
  Brownsville, 
  *Beeville, 
  

   Burnet 
  County, 
  Cypress 
  Mills, 
  Comal 
  County, 
  Cameron 
  County, 
  

   Caterina, 
  Colorado 
  City, 
  Cotulla, 
  Childress, 
  Dimit 
  County, 
  Dallas, 
  

   Dallas 
  County, 
  Edinburg, 
  Eagle 
  Pass, 
  Fedor, 
  Forestburg, 
  Frio 
  State 
  

   Park, 
  Goldthwaite, 
  Hidalgo 
  County, 
  Kingsville, 
  Laredo, 
  Memphis, 
  

   Menard, 
  *Mineral 
  Wells, 
  New 
  Braunsfels, 
  Oakville, 
  Plesanton, 
  Reeves 
  

   County, 
  Round 
  Mountain, 
  Sabinal, 
  Taloga, 
  Uvalde, 
  Weslaco, 
  and 
  

   Zavalla 
  County. 
  New 
  Mexico: 
  State 
  label 
  only 
  (H. 
  W. 
  Wenzel 
  col- 
  

   lection). 
  Mexico: 
  La 
  Gloria, 
  south 
  of 
  Monclova, 
  Coahuila; 
  and 
  

   Rancho 
  Preso, 
  Nuevo 
  Le6n. 
  

  

  Season. 
  — 
  April 
  28 
  to 
  September 
  25, 
  with 
  largest 
  numbers 
  collected 
  

   in 
  May, 
  June, 
  and 
  September. 
  

  

  Bolbocerastes 
  peninsularis 
  (Schaeflfer), 
  new 
  combination 
  

  

  FiQDRE 
  14, 
  d; 
  Plate 
  4 
  

  

  Bradycinetus 
  serratus 
  var. 
  peninsularis 
  Schaeffer, 
  Trans. 
  Amer. 
  Ent. 
  Soc, 
  vol. 
  32, 
  

  

  p. 
  252, 
  1906. 
  

   Bolboceras 
  serratus 
  var. 
  peninsularis 
  Boucomont, 
  in 
  Schenkling, 
  Coleopterorum 
  

  

  catalogus, 
  pt. 
  46, 
  p. 
  13, 
  1912. 
  

  

  All 
  specimens 
  of 
  this 
  species 
  examined 
  have 
  been 
  dull, 
  smooth, 
  and 
  

   of 
  a 
  uniform 
  very 
  dark 
  red-brown 
  color. 
  The 
  male 
  is 
  quite 
  distinctive 
  

   (see 
  pi. 
  4, 
  lower 
  right). 
  In 
  the 
  female 
  the 
  moderately 
  high 
  cephalic 
  

   horn 
  is 
  twice 
  the 
  width 
  of 
  the 
  tip 
  of 
  the 
  clypeal 
  horn 
  and 
  the 
  sec- 
  

   ondary 
  lateral 
  horns 
  or 
  tubercles 
  are 
  usually 
  more 
  prominent 
  than 
  in 
  

   B. 
  imperialis. 
  The 
  carinae 
  between 
  these 
  and 
  the 
  clypeal 
  horn 
  are 
  

   strong 
  and 
  well 
  marked. 
  

  

  Type. 
  — 
  Lectotype 
  male, 
  present 
  selection, 
  USNM 
  42568. 
  

  

  Type 
  locality. 
  — 
  Santa 
  Rosa, 
  Baja 
  California, 
  Mexico. 
  

  

  Specimens 
  examined. 
  — 
  13. 
  

  

  Distribution. 
  — 
  California: 
  2, 
  State 
  label 
  only, 
  CARN. 
  Mexico: 
  

   Santa 
  Rosa, 
  San 
  Felipe, 
  La 
  Paz, 
  and 
  San 
  Ignacio, 
  all 
  in 
  Baja 
  Cali- 
  

   fornia. 
  

  

  Season. 
  — 
  July 
  27 
  to 
  October 
  1. 
  

  

  Bolborhombus^ 
  new 
  genus 
  

  

  Mandibles 
  arcuate 
  externally. 
  Head, 
  male 
  and 
  female, 
  without 
  

   median 
  frontal 
  horn. 
  Pronotum 
  serrate 
  laterally; 
  apex 
  with 
  a 
  carina 
  

   paralleling 
  anterior 
  margin, 
  the 
  interspace 
  interrupted 
  behind 
  each 
  

  

  I 
  

  

  