﻿art. 
  24 
  SOUTH 
  AMERICAN 
  SNAKES 
  AMARAL 
  19 
  

  

  with 
  the 
  anterior 
  chin-shields 
  which 
  are 
  a 
  little 
  shorter 
  than 
  the 
  

   posterior; 
  3d 
  upper 
  labial 
  very 
  large 
  but 
  4th 
  the 
  largest; 
  v. 
  267; 
  

   c. 
  29 
  p.; 
  black 
  with 
  61 
  yellowish- 
  white 
  cross-bars 
  widening 
  on 
  the 
  

   belly 
  which 
  is 
  barred 
  with 
  black 
  and 
  yellowish-white; 
  white 
  dorsal 
  

   scales 
  usually 
  with 
  a 
  black 
  spot; 
  tail 
  yellowish 
  with 
  3 
  black 
  rings; 
  

   head 
  as 
  Boulenger's 
  description 
  for 
  both 
  mipartitus 
  and 
  microps; 
  

   total 
  length, 
  740 
  mm. 
  

  

  No. 
  62796, 
  female, 
  also 
  sent 
  by 
  Mr. 
  Goding: 
  The 
  same 
  head 
  shield 
  

   disposition; 
  v. 
  274; 
  c. 
  29 
  pairs 
  + 
  1 
  single; 
  coloration 
  the 
  same, 
  62 
  

   cross 
  bars 
  on 
  the 
  body 
  and 
  4 
  on 
  the 
  tail; 
  total 
  length, 
  545 
  mm. 
  

  

  82. 
  MICRURUS 
  FILIFORMIS 
  (Guenther) 
  

  

  Elaps 
  filiformis 
  Guenther, 
  Proc. 
  Zool. 
  Soc. 
  London, 
  1859, 
  p. 
  86, 
  pi. 
  18 
  

   fig. 
  B. 
  — 
  Boulenger, 
  Cat. 
  Snakes 
  Brit. 
  Mus., 
  vol. 
  3, 
  1896, 
  p. 
  430. 
  

  

  Colombia. 
  — 
  1 
  specimen, 
  No. 
  4338, 
  from 
  Truando, 
  New 
  Granada, 
  

   in 
  bad 
  condition. 
  

  

  83. 
  MICRURUS 
  ANCORALIS 
  (Jan) 
  

  

  Elaps 
  marcgravi, 
  var. 
  ancoralis 
  Jan, 
  Icon. 
  Ophid., 
  pt. 
  42, 
  1872, 
  pi. 
  4, 
  fig. 
  2. 
  

   Elaps 
  ancoralis 
  Boulenger, 
  Cat. 
  Snakes 
  Brit. 
  Mus., 
  vol. 
  3, 
  1896, 
  p. 
  432. 
  

  

  Ecuador. 
  — 
  1 
  specimen, 
  No. 
  12267, 
  female, 
  collected 
  in 
  Guayaquil: 
  

   v. 
  253, 
  c. 
  32 
  p.; 
  body 
  with 
  15 
  triads 
  of 
  black 
  rings, 
  one 
  on 
  the 
  tail 
  

   and 
  one 
  near 
  the 
  nape; 
  a 
  very 
  defined 
  anchor-shaped 
  marking 
  on 
  

   the 
  occiput 
  and 
  nape; 
  symphysial 
  separated 
  from 
  anterior 
  pair 
  of 
  

   chin-shields 
  by 
  1st 
  pair 
  of 
  lower 
  labials, 
  which 
  is 
  exceptional 
  in 
  this 
  

   species; 
  total 
  length, 
  488 
  mm. 
  

  

  84. 
  MICRURUS 
  NARDUCCII 
  (Jan) 
  

  

  Elaps 
  narducci 
  Jan, 
  Arch. 
  Zool. 
  Anat. 
  Physiol., 
  vol. 
  2, 
  1863, 
  p. 
  222 
  (type 
  

   from 
  Bolivia). 
  — 
  Boulenger, 
  Cat. 
  Snakes 
  Brit. 
  Mus., 
  vol. 
  3, 
  1896, 
  p. 
  433. 
  

  

  Ecuador. 
  — 
  2 
  specimens, 
  sent 
  from 
  Macas, 
  Provincia 
  d'El 
  Oriente, 
  

   by 
  M. 
  Madira: 
  No. 
  65473, 
  female; 
  v. 
  320; 
  c. 
  20 
  p.; 
  black 
  above 
  

   with 
  52 
  transversely 
  oval 
  spots 
  all 
  yellow, 
  some 
  extending 
  as 
  irregular 
  

   blotches 
  down 
  to 
  the 
  sides; 
  2 
  yellow 
  rings 
  on 
  the 
  tail 
  as 
  in 
  Jan's 
  

   figure; 
  9 
  total 
  length 
  585 
  mm. 
  No. 
  65474, 
  male; 
  v. 
  275; 
  c. 
  23 
  p.; 
  

   coloration 
  as 
  in 
  No. 
  65473, 
  with 
  43 
  oval 
  yellow 
  spots; 
  yellow 
  

   beneath, 
  l 
  l 
  A 
  yellow 
  rings 
  on 
  the 
  tail; 
  total 
  length 
  497 
  mm. 
  

  

  85. 
  MICRURUS 
  FRONTALIS 
  (Dumeril 
  and 
  Bibron) 
  

  

  Elaps 
  frontalis 
  Dumeril 
  and 
  Bibron, 
  Erp. 
  Gen., 
  vol. 
  7, 
  1854, 
  p. 
  1223 
  

   (part). 
  — 
  Boulenger, 
  Cat. 
  Snakes 
  Brit. 
  Mus., 
  vol. 
  3, 
  1896, 
  p. 
  427. 
  

  

  Argentina. 
  — 
  1 
  specimen, 
  No. 
  52592, 
  collected 
  in 
  Mendoza 
  by 
  Dr. 
  

   Carlos 
  S. 
  Reed: 
  7 
  sets 
  of 
  3 
  rings, 
  the 
  middle 
  about 
  2 
  to 
  3 
  times 
  as 
  

   wide 
  as 
  the 
  center. 
  

  

  • 
  Icon. 
  Gen., 
  1872, 
  p. 
  42, 
  pi. 
  6, 
  fig. 
  5. 
  

  

  