﻿18 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  CT 
  

  

  eighth 
  to 
  tenth 
  distinctly 
  transverse; 
  ninth 
  and 
  tenth 
  one-third 
  wider 
  

   than 
  long; 
  second 
  and 
  third 
  elongate, 
  subequal; 
  third 
  more 
  slender; 
  

   first 
  joint 
  as 
  long 
  as 
  the 
  next 
  three. 
  Thorax 
  as 
  long 
  as 
  broad, 
  very 
  

   slightly 
  wider 
  than 
  the 
  elytra; 
  sides 
  distinctly 
  narrowed 
  posteriorly 
  

   and 
  evenly 
  and 
  rather 
  feebly 
  arcuate 
  to 
  the 
  basal 
  angles 
  which 
  are 
  

   rounded 
  and 
  not 
  distinct, 
  just 
  perceptibly 
  sinuate 
  before 
  the 
  angles, 
  

   anterior 
  angles 
  narrowly 
  rounded, 
  not 
  prominent; 
  side 
  margins 
  fine 
  

   throughout, 
  apex 
  not 
  margined, 
  base 
  distinctly 
  margined 
  ; 
  lateral 
  im- 
  

   pressions 
  not 
  distinct. 
  Elytra 
  scarcely 
  longer 
  than 
  the 
  thorax, 
  as 
  

   long 
  as 
  broad 
  ; 
  suture 
  slightly 
  impressed. 
  Prosternal 
  tuberculation 
  

   strong, 
  flattened 
  at 
  the 
  apex. 
  Length 
  4.5 
  mm., 
  width 
  1 
  mm. 
  

  

  Type 
  locality. 
  — 
  30.6 
  and 
  1 
  paratype 
  2.7 
  Chiricahua 
  Mountains, 
  

   Ariz. 
  (Hubbard 
  and 
  Schwarz). 
  

  

  Type.— 
  €at. 
  No. 
  25339, 
  U.S.N.M. 
  One 
  paratype, 
  Chiricahua 
  

   Mountains, 
  Ariz., 
  3.7, 
  VII 
  (Hubbard 
  and 
  Schwarz) 
  in 
  the 
  writer's 
  

   collection. 
  

  

  OSORIUS 
  CRENULIFRONS, 
  new 
  species 
  

  

  Form 
  slightly 
  broad; 
  color 
  black, 
  antennae 
  and 
  legs 
  rufo-piceous. 
  

   Head 
  rather 
  distinctly 
  alutaceous, 
  strongly 
  shining; 
  thorax 
  very, 
  

   faintly 
  alutaceous; 
  elytra 
  very 
  feebly 
  and 
  sparsely 
  rugose. 
  Head 
  

   very 
  finely 
  and 
  sparsely 
  punctate; 
  thorax 
  finely 
  and 
  a 
  little 
  sparsely 
  

   punctate; 
  elytra 
  and 
  abdomen 
  subimpunctate, 
  not 
  alutaceous; 
  abdo- 
  

   men 
  beneath 
  alutaceous, 
  basal 
  segments 
  with 
  a 
  few 
  coarse 
  punctures 
  

   along 
  the 
  apical 
  margins; 
  fifth 
  and 
  apical 
  segments 
  rather 
  coarsely 
  

   and 
  closely 
  punctate, 
  the 
  latter 
  distinctly 
  rugose 
  and 
  with 
  a 
  rounded 
  

   median 
  impression. 
  Head 
  narrower 
  than 
  the 
  thorax 
  at 
  apex; 
  

   clypeus 
  truncate 
  and 
  crenulate 
  in 
  front; 
  front 
  with 
  four 
  foveate 
  

   punctures 
  and 
  a 
  median 
  impression 
  anteriorly; 
  antennae 
  slender, 
  

   reaching 
  the 
  middle 
  of 
  the 
  thorax, 
  outer 
  joints 
  not 
  distinctly 
  larger; 
  

   joints 
  two 
  to 
  six 
  distinctly 
  elongate, 
  outer 
  joints 
  as 
  long 
  as 
  wide; 
  

   joint 
  three 
  nearly 
  twice 
  as 
  long 
  as 
  the 
  second 
  and 
  as 
  long 
  as 
  the 
  

   next 
  two; 
  first 
  longer 
  than 
  second 
  and 
  third 
  together. 
  Thorax 
  a 
  

   third 
  wider 
  than 
  long, 
  base 
  scarcely 
  narrower 
  than 
  the 
  apex, 
  widest 
  

   at 
  apical 
  third; 
  sides 
  thence 
  nearly 
  straight 
  and 
  moderately 
  con- 
  

   vergent 
  to 
  the 
  posterior 
  angles 
  which 
  are 
  obtuse 
  but 
  distinct, 
  anterior 
  

   angles 
  acute 
  and 
  prominent; 
  side 
  margins 
  distinctly 
  wider 
  pos- 
  

   teriorly 
  where 
  they 
  coalesce 
  with 
  rather 
  large 
  and 
  deep 
  basal 
  impres- 
  

   sions; 
  apex 
  not 
  margined; 
  base 
  distinctly 
  margined. 
  Elytra 
  scarcely 
  

   wider 
  than 
  the 
  thorax 
  or 
  wider 
  than 
  long, 
  distinctly 
  longer 
  than 
  

   the 
  thorax; 
  suture 
  scarcely 
  impressed. 
  Posternal 
  tuberculation 
  

   strong 
  and 
  rounded 
  at 
  apex. 
  Length 
  9 
  mm., 
  width 
  2 
  mm. 
  

  

  Type 
  locality. 
  — 
  San 
  Diego, 
  Cuba, 
  February 
  1, 
  1917 
  (Wm. 
  Palmer). 
  

  

  Type.— 
  Cat. 
  No. 
  2G344, 
  U.S.N.M. 
  

  

  