﻿476 
  rEOCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  Genus 
  CHLAMYS 
  Knoch. 
  

   Clilannjs 
  Knock, 
  Neu. 
  Beytr. 
  Ins., 
  I, 
  1801, 
  p. 
  122. 
  

  

  AXALYTICAI. 
  KEY 
  TO 
  TIIK 
  .SPECIES 
  OF 
  CHLAMYS. 
  

  

  Antennsp 
  Avitli 
  third 
  aud 
  fourth 
  joints 
  subeqiial, 
  slender. 
  

  

  Legs 
  maculate, 
  body 
  .subquadrate, 
  pubescent. 
  .. 
  C. 
  maciilipes 
  Chevrolat. 
  (p. 
  476). 
  

   Legs 
  black, 
  body 
  subquadrate, 
  metallic. 
  

  

  Metascutellum 
  A'isible, 
  elytra 
  with 
  velvety-black 
  fovea? 
  on 
  disc. 
  

  

  C. 
  mnnnonia 
  Lacordaire. 
  (p. 
  476). 
  

   Metascutellum 
  not 
  visible, 
  intervals 
  of 
  elytra 
  uniform. 
  

   Eljtral 
  intervals 
  sparsely 
  punctate. 
  

  

  Sides 
  of 
  thorax 
  densely 
  strigose 
  C. 
  pJicaia 
  Fabricius. 
  (p. 
  478). 
  

  

  Sides 
  of 
  thorax 
  obsoletely 
  strigose. 
  .. 
  C. 
  tuherculata 
  King. 
  (p. 
  479). 
  

   Elytral 
  intervals 
  densely, 
  deeply 
  punctate. 
  

  

  C. 
  cribripeniiis 
  Le 
  Conte. 
  (p. 
  479). 
  

  

  Legs 
  red, 
  Ijody 
  oblong, 
  black, 
  ojiaque 
  C. 
  forcolafa 
  Kuoch. 
  (p. 
  479). 
  

  

  Antenna' 
  with 
  fnurth 
  joint 
  broadly 
  dilated, 
  body 
  oblong, 
  ferruginous. 
  

  

  C. 
  arizo)iensis, 
  new 
  species, 
  (p. 
  479). 
  

  

  CHLAMYS 
  MACULIPES 
  Cheviolat. 
  

  

  Chlamiis 
  maculipes 
  Chevholat, 
  Col. 
  ]Mcx. 
  Cent., 
  II, 
  1835, 
  No. 
  120.— 
  Lacordaire, 
  

   Mon., 
  p. 
  660. 
  

  

  This 
  vspecies, 
  which 
  is 
  not 
  uucoramou 
  iu 
  Mexico 
  and 
  Nicaragua, 
  has 
  

   hitely 
  been 
  collected 
  at 
  Brownsville, 
  Texas, 
  by 
  Mr. 
  E. 
  A. 
  Schwarz 
  and 
  

   Professor 
  C 
  II. 
  T. 
  Townsend. 
  It 
  is 
  oblong 
  quadrate, 
  greenish 
  black 
  

   above, 
  pubescent 
  and 
  densely 
  rugosely 
  punctate. 
  The 
  gibbosity 
  of 
  

   the 
  thorax 
  is 
  rounded, 
  without 
  cresi, 
  and 
  has 
  two 
  polished 
  black 
  spaces 
  

   on 
  the 
  anterior 
  surfaces. 
  The 
  elytra 
  have 
  small 
  obtuse 
  isolated 
  tuber- 
  

   cles, 
  one 
  on 
  the 
  basal 
  lobe, 
  four 
  in 
  an 
  oblique 
  line 
  iroin 
  the 
  humerus 
  to 
  

   the 
  middle 
  of 
  the 
  suture, 
  one 
  near 
  the 
  lateral 
  sinus, 
  and 
  three 
  or 
  four 
  

   posteriorly. 
  The 
  ventral 
  surface, 
  pygidium 
  and 
  legs 
  are 
  feiruginous, 
  

   varied 
  with 
  black. 
  The 
  head 
  is 
  entirely 
  ferrnginous 
  in 
  the 
  Texan 
  speci- 
  

   mens. 
  The 
  antennic 
  are 
  longer 
  and 
  more 
  slender 
  than 
  in 
  the 
  plicata 
  

   group. 
  

  

  CHLAMYS 
  MEMNONIA 
  Lacordaire. 
  

  

  Chlomiis 
  mcmnoiiia 
  Lacordaire, 
  Mon., 
  p. 
  785. 
  

  

  From 
  southern 
  Arizona 
  aud 
  southwestern 
  Texas 
  there 
  have 
  long 
  been 
  

   represented 
  in 
  American 
  collections 
  certain 
  roughly 
  sculptured 
  forms 
  

   of 
  Chlamys, 
  supposed 
  generally 
  to 
  be 
  merely 
  varieties 
  of 
  C. 
  plicata. 
  A 
  

   closer 
  examination 
  shows 
  that 
  these 
  forms 
  differ 
  materially, 
  not 
  alone 
  

   in 
  sculpture, 
  but 
  in 
  the 
  remarkable 
  character 
  of 
  having 
  a 
  visible 
  second 
  

   scutellum. 
  In 
  C. 
  plicata 
  the 
  metauotum, 
  on 
  removing 
  the 
  elytra, 
  shows 
  

   a 
  line 
  carina, 
  which 
  iu 
  C. 
  memnonia 
  becomes 
  very 
  strongly 
  developed, 
  

   and 
  in 
  most 
  individuals 
  becomes 
  visible, 
  between 
  the 
  applied 
  elytra, 
  

   behind 
  the 
  ordinary 
  scutellum 
  as 
  a 
  long, 
  narrow 
  second 
  scutellum. 
  This 
  

  

  