﻿228 
  Mr. 
  H. 
  W. 
  Bates' 
  additions 
  to 
  the 
  

  

  C. 
  Im-e 
  and 
  allied 
  species, 
  and 
  the 
  femora 
  and 
  tibise 
  are 
  

   less 
  roughened 
  with 
  punctures, 
  and 
  nearly 
  destitute 
  of 
  

   setse. 
  

  

  C. 
  ijolitiun 
  (Chaud,) 
  seems 
  to 
  be 
  peculiar 
  to 
  the 
  

   neighbourhood 
  of 
  Toluca, 
  where 
  Herr 
  Hoge 
  obtained 
  a 
  

   large 
  number 
  of 
  specimens. 
  It 
  is 
  very 
  closely 
  allied 
  to 
  

   C. 
  diminutum, 
  differing, 
  indeed, 
  only 
  in 
  its 
  constantly 
  

   more 
  elongate 
  form, 
  the 
  elytra 
  being 
  also 
  longer 
  relative 
  

   to 
  the 
  head 
  and 
  thorax, 
  and 
  its 
  average 
  larger 
  size, 
  viz., 
  

   16 
  — 
  21 
  millim. 
  ; 
  the 
  rows 
  of 
  fovese 
  also 
  are 
  seldom 
  con- 
  

   spicuous. 
  

  

  As 
  individuals 
  (generally 
  small) 
  of 
  C. 
  diminutum 
  

   occur 
  in 
  which 
  the 
  elytra 
  are 
  relatively 
  more 
  elongate 
  

   than 
  usual, 
  the 
  two 
  species 
  cannot 
  be 
  said 
  to 
  be 
  com- 
  

   pletely 
  segregated. 
  But, 
  similarly, 
  examples 
  occur 
  (a 
  

   few 
  in 
  a 
  large 
  series) 
  which 
  connect 
  C. 
  politam 
  (Chaud.) 
  

   and 
  C. 
  striatulnm 
  (Chevrolat), 
  two 
  species 
  which 
  appear 
  

   so 
  completely 
  distinct 
  in 
  the 
  majority 
  of 
  their 
  indi- 
  

   viduals. 
  

  

  Calosoma 
  striatzduin, 
  Chevrolat, 
  

  

  In 
  describing 
  C. 
  politum, 
  Chaudoir 
  gives 
  the 
  elytral 
  

   convexity 
  as 
  one 
  of 
  the 
  characters 
  distinguishing 
  it 
  from 
  

   C. 
  striatulum. 
  It 
  is 
  true 
  that 
  the 
  great 
  majority 
  of 
  the 
  

   examples 
  of 
  C. 
  striatulum 
  from 
  Jalapa 
  and 
  Las 
  Vigas 
  

   have 
  very 
  moderately 
  convex 
  elytra, 
  with 
  the 
  posterior 
  

   slope 
  much 
  more 
  gradual 
  than 
  in 
  C. 
  politum 
  or 
  C. 
  Iceve 
  : 
  

   but 
  examples 
  occur 
  in 
  both 
  the 
  localities 
  mentioned, 
  and 
  

   in 
  both 
  sexes, 
  where 
  the 
  convexity 
  is 
  much 
  greater 
  than 
  

   usual, 
  and 
  not 
  inferior 
  to 
  that 
  of 
  C. 
  politum. 
  C. 
  stria- 
  

   tulum 
  is 
  recognisable 
  by 
  its 
  narrower 
  oblong, 
  scarcely 
  

   ovate, 
  form, 
  nearly 
  as 
  elongate 
  as 
  C. 
  striatipenne, 
  and 
  

   by 
  the 
  perceptibly 
  more 
  quadrate 
  thorax, 
  besides 
  the 
  

   striated 
  elytra 
  ; 
  but 
  some 
  of 
  the 
  convex 
  examples 
  differ 
  

   from 
  the 
  usual 
  form 
  also 
  in 
  being 
  distinctly 
  shorter 
  and 
  

   more 
  ovate, 
  and 
  they 
  are, 
  in 
  fact, 
  exactly 
  intermediate 
  

   between 
  C. 
  politum 
  and 
  C. 
  striatulum. 
  As 
  gradations 
  

   occur, 
  and 
  the 
  variety 
  inhabits 
  the 
  same 
  locality 
  as 
  the 
  

   type, 
  it 
  is 
  better 
  not 
  to 
  give 
  it 
  a 
  name, 
  as 
  it 
  would 
  be 
  

   sure 
  to 
  be 
  misapplied 
  hereafter. 
  

  

  Calosoma 
  morelianum. 
  

   C. 
  diminuio 
  quoad 
  formam 
  simillimuiu 
  et 
  forsan 
  ejus 
  varietas 
  

   localis; 
  differt 
  tamen 
  capite 
  praDcipue 
  lateribus 
  sparsim 
  puuculato 
  

  

  