﻿LASIOPYGA 
  361 
  

  

  The 
  white 
  on 
  side 
  of 
  head 
  and 
  neck 
  of 
  the 
  type 
  is 
  very 
  extensive 
  

   and 
  forms 
  a 
  broad 
  collar 
  nearly 
  around 
  the 
  neck, 
  only 
  divided 
  by 
  the 
  

   narrow 
  line 
  on 
  hind 
  neck. 
  The 
  specimen 
  appears 
  to 
  have 
  no 
  history 
  

   beyond 
  the 
  fact 
  that 
  it 
  was 
  given 
  by 
  M. 
  Portier-Prohou, 
  that 
  it 
  died 
  

   in 
  the 
  Menagerie 
  on 
  May 
  5th, 
  1887, 
  and 
  that 
  it 
  may 
  have 
  come 
  from 
  

   West 
  Africa. 
  

  

  Lasiopyga 
  kolbi 
  (Neumann). 
  

  

  Cercopithecus 
  kolbi 
  Neum., 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  II, 
  1902, 
  p. 
  

   144 
  ; 
  Pocock, 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  II, 
  1907, 
  p. 
  703. 
  

  

  KOLB'S 
  GUENON. 
  

  

  Type 
  locality. 
  Kedong 
  Escarpment, 
  east 
  side 
  of 
  Mt. 
  Kenia, 
  

   British 
  East 
  Africa. 
  Type 
  in 
  Berlin 
  Museum. 
  

  

  Geogr. 
  Distr. 
  Restricted 
  apparently 
  to 
  Mount 
  Kenia, 
  British 
  

   East 
  Africa. 
  

  

  Genl. 
  Char. 
  Similar 
  to 
  L. 
  albitorquata, 
  but 
  white 
  of 
  throat 
  

   extends 
  as 
  half 
  collar 
  around 
  the 
  neck. 
  

  

  Color. 
  Male. 
  Forehead, 
  top 
  of 
  head 
  and 
  nape 
  ochraceous 
  and 
  

   black, 
  darkest 
  on 
  crown 
  ; 
  side 
  of 
  head 
  and 
  cheeks 
  speckled 
  yellow 
  and 
  

   black; 
  narrow 
  line 
  between 
  shoulders 
  widening 
  out 
  behind 
  shoulders, 
  

   speckled 
  black 
  and 
  white, 
  gradually 
  changing 
  on 
  lower 
  back 
  and 
  

   rump 
  to 
  dark 
  ochraceous 
  rufous 
  and 
  black; 
  cheeks, 
  and 
  broad 
  white 
  

   collar 
  on 
  sides 
  of 
  neck 
  reaching 
  on 
  to 
  the 
  back, 
  but 
  separated 
  by 
  the 
  

   speckled 
  black 
  and 
  white 
  portion 
  of 
  the 
  hind 
  neck 
  and 
  upper 
  back; 
  

   chin 
  and 
  throat 
  white 
  ; 
  outer 
  side 
  of 
  arms 
  black 
  speckled 
  with 
  white, 
  

   inner 
  side 
  black 
  ; 
  hands 
  black 
  ; 
  under 
  parts 
  and 
  legs 
  dark 
  gray 
  banded 
  

   with 
  black; 
  tail 
  at 
  root 
  like 
  back, 
  mixed 
  black 
  and 
  ochraceous 
  rufous 
  

   for 
  about 
  one 
  third 
  the 
  total 
  length, 
  remainder 
  jet 
  black; 
  feet 
  black; 
  

   ears 
  with 
  long 
  white 
  tufts; 
  end 
  of 
  nose 
  and 
  lips 
  covered 
  with 
  white 
  

   hairs. 
  Ex 
  type 
  British 
  Museum. 
  

  

  Measurements. 
  Total 
  length, 
  1,370; 
  tail, 
  790; 
  foot, 
  110, 
  (skin). 
  

   Skull: 
  total 
  length, 
  115.2; 
  occipito-nasal 
  length, 
  96.5; 
  intertemporal 
  

   width, 
  42.1 
  ; 
  Hensel, 
  42.6; 
  zygomatic 
  width, 
  76.2; 
  width 
  of 
  braincase, 
  

   55.3; 
  median 
  length 
  of 
  nasals, 
  23.5; 
  palatal 
  length, 
  43.1; 
  length 
  of 
  

   upper 
  canines, 
  24 
  ; 
  length 
  of 
  upper 
  molar 
  series, 
  27.2 
  ; 
  length 
  of 
  man- 
  

   dible, 
  83.6; 
  length 
  of 
  lower 
  molar 
  series, 
  33.3. 
  Ex 
  type 
  British 
  

   Museum. 
  

  

  While 
  having 
  a 
  general 
  resemblance 
  to 
  L. 
  albitorquata 
  Pou- 
  

   sargues, 
  it 
  will 
  be 
  seen, 
  by 
  comparing 
  the 
  above 
  with 
  the 
  description 
  of 
  

   the 
  type 
  of 
  the 
  allied 
  species, 
  that 
  there 
  are 
  several 
  important 
  differ- 
  

   ences 
  between 
  them 
  in 
  coloration 
  ; 
  such 
  as 
  the 
  color 
  of 
  the 
  inner 
  side 
  

  

  