﻿120 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  i03 
  

  

  In 
  smaller 
  specimens 
  the 
  clypeus 
  slopes 
  upward 
  and 
  backward 
  from 
  

   the 
  wide 
  straight 
  anterior 
  edge 
  to 
  the 
  narrower 
  but 
  moderately 
  wide 
  

   and 
  somewhat 
  anteriorly 
  arcuate 
  apex 
  of 
  the 
  horn, 
  the 
  external 
  

   angles 
  of 
  which 
  are 
  thickened 
  to 
  slightly 
  nodose. 
  In 
  large 
  specimens 
  

   the 
  external 
  angles 
  of 
  the 
  horn 
  become 
  strongly 
  elevated 
  tubercles, 
  in 
  

   some 
  individuals 
  wide 
  apart, 
  in 
  others 
  relatively 
  close 
  together. 
  The 
  

   head 
  back 
  of 
  the 
  horn 
  is 
  densely, 
  quite 
  coarsely 
  punctate, 
  occasionally 
  

   with 
  a 
  short, 
  obscure, 
  anteriorly 
  arcuate 
  carina 
  or 
  very 
  low 
  binodose 
  

   tubercle. 
  In 
  the 
  female 
  the 
  anterior 
  edge 
  of 
  the 
  clypeus 
  is 
  nearly 
  

   vertical 
  to 
  the 
  sharply 
  carinate 
  margin. 
  Well 
  back 
  and 
  nearly 
  in 
  line 
  

   with 
  the 
  anterior 
  edges 
  of 
  the 
  ocular 
  canthi 
  are 
  two 
  widely 
  separated, 
  

   conical 
  tubercles 
  with 
  a 
  fine 
  anteriorly 
  angulate 
  carina 
  between 
  them 
  

   and 
  a 
  low 
  median 
  swelling 
  or 
  tubercle 
  close 
  behind 
  them. 
  The 
  

   tubercles 
  are 
  usually 
  strongly 
  developed 
  but 
  occasionally 
  in 
  small 
  

   specimens 
  may 
  appear 
  only 
  as 
  slight 
  thickenings 
  of 
  the 
  ends 
  of 
  the 
  

   angulate 
  carina. 
  

  

  Type. 
  — 
  ^Lectotype 
  male, 
  present 
  selection, 
  USNM 
  42569. 
  

  

  Type 
  locality. 
  — 
  Palmerlee, 
  Cochise 
  County, 
  Ariz. 
  

  

  Specimens 
  examined. 
  — 
  104. 
  

  

  Distribution. 
  — 
  Arizona: 
  Cave 
  Creek 
  and 
  Pinery 
  Canyon 
  (Chira- 
  

   cahua 
  Mountains, 
  Cochise 
  County), 
  Dewey, 
  Douglas, 
  Globe, 
  Hua- 
  

   chuca 
  Mountains, 
  Fort 
  Huachuca, 
  Kits 
  Peak 
  (Rincon, 
  Baboquivari 
  

   Mountains), 
  Nogales, 
  *Oracle, 
  Palmerlee, 
  Patagonia, 
  Prescott, 
  

   Reddington, 
  Madera 
  Canyon 
  (Santa 
  Rita 
  Mountains), 
  and 
  Tucson. 
  

   Texas: 
  *Alpine, 
  El 
  Paso, 
  *Fort 
  Davis, 
  Kingsville, 
  and 
  Round 
  Moun- 
  

   tain. 
  Mexico: 
  Alamos 
  (Sonora), 
  Venedio 
  (Sinaloa), 
  Oaxaca 
  (Oaxaca), 
  

   Santa 
  Rosa 
  (Baja 
  California), 
  Naco 
  (Sonora), 
  Tlahualilo, 
  and 
  Rio 
  

   Mayo. 
  

  

  Season. 
  — 
  July 
  1 
  to 
  October 
  10, 
  with 
  largest 
  numbers 
  in 
  July 
  and 
  

   August. 
  

  

  B. 
  S. 
  90VIRNMENT 
  PRINTIH6 
  OFFICBi 
  1*13 
  

  

  