﻿SOUTH 
  AMERICAN 
  SNAKES 
  IN 
  THE 
  COLLECTION 
  OF 
  THE 
  

   UNITED 
  STATES 
  NATIONAL 
  MUSEUM 
  

  

  By 
  Afranio 
  do 
  Amaral 
  

  

  Of 
  the 
  Institute 
  do 
  Butantan 
  and 
  Museu 
  Paulista, 
  Sao 
  Paulo, 
  Brazil 
  

  

  During 
  the 
  course 
  of 
  a 
  study 
  which 
  I 
  have 
  undertaken 
  on 
  the 
  col- 
  

   lection 
  of 
  South 
  American 
  snakes 
  contained 
  in 
  the 
  United 
  States 
  

   National 
  Museum, 
  I 
  found 
  several 
  new 
  forms 
  that 
  I 
  have 
  already 
  

   described 
  elsewhere 
  * 
  and 
  a 
  great 
  many 
  other 
  species 
  which 
  are 
  so 
  

   interesting 
  as 
  to 
  deserve 
  a 
  detailed 
  description 
  of 
  their 
  character- 
  

   istics. 
  

  

  The 
  examination 
  of 
  that 
  collection 
  has 
  led 
  me 
  also 
  to 
  review 
  a 
  few 
  

   important 
  and 
  complicated 
  questions 
  in 
  systematica 
  such 
  as 
  that 
  con- 
  

   cerning 
  the 
  real 
  status 
  of 
  the 
  two 
  species 
  of 
  Elapidae, 
  Micrurus 
  coral- 
  

   Hnus 
  (Wied, 
  1820) 
  and 
  M. 
  lemniscatus 
  (Linnaeus, 
  1758), 
  as 
  well 
  as, 
  

   that 
  of 
  the 
  species 
  of 
  Colubridae 
  Dipsadinae 
  Sibynomorphus 
  mikanii 
  

   (Schlegel, 
  1837). 
  

  

  In 
  discussing 
  the 
  different 
  specimens 
  I 
  shall 
  confine 
  myself 
  to 
  those 
  

   characteristics 
  which 
  I 
  have 
  found 
  to 
  be 
  different 
  either 
  from 
  those 
  of 
  

   the 
  type 
  or 
  from 
  those 
  ascribed 
  to 
  them 
  by 
  Boulenger 
  in 
  his 
  " 
  Cata- 
  

   logue 
  of 
  the 
  Snakes 
  in 
  the 
  British 
  Museum." 
  

  

  I 
  wish 
  to 
  express 
  my 
  gratitude 
  to 
  Dr. 
  L. 
  Stejneger 
  for 
  having 
  per- 
  

   mitted 
  me 
  to 
  study 
  the 
  collection 
  and 
  also 
  to 
  Miss 
  D. 
  Cochran 
  for 
  

   placing 
  every 
  available 
  facility 
  at 
  my 
  disposal, 
  as 
  well 
  as 
  to 
  Dr. 
  

   Thomas 
  Barbour 
  for 
  providing 
  the 
  opportunity 
  of 
  examining 
  com- 
  

   paratively 
  the 
  collection 
  of 
  South 
  American 
  snakes 
  in 
  the 
  Museum 
  

   of 
  Comparative 
  Zoology. 
  

  

  1. 
  HELMINTHOPHIS 
  BONDENSIS 
  Griffin 
  

  

  Helminthophis 
  bondensis 
  Griffin, 
  Mem. 
  Carnegie 
  Mus., 
  vol. 
  7, 
  1915, 
  p. 
  165. 
  

  

  Colombia. 
  — 
  1 
  specimen, 
  No. 
  61,675. 
  

  

  Panama.— 
  3 
  specimens, 
  Nos. 
  37009, 
  60517, 
  and 
  61989. 
  

  

  2. 
  EPICRATES 
  CRASSUS 
  Cope 
  

  

  Epicrates 
  crassus 
  Cope, 
  Proc. 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  1862, 
  p. 
  349. 
  — 
  

   Boulenger, 
  Cat. 
  Snakes 
  Brit. 
  Mus., 
  vol. 
  3, 
  1S98, 
  p. 
  593. 
  

  

  Brazil. 
  — 
  1 
  specimen, 
  type, 
  No. 
  12413, 
  from 
  Parana 
  River. 
  

  

  1 
  Journ. 
  Washington 
  Acad. 
  Sci., 
  vol. 
  14, 
  no. 
  9, 
  1924, 
  pp. 
  200-202. 
  

  

  1 
  

  

  No. 
  2596.— 
  Proceedings 
  U. 
  S. 
  National 
  Museum, 
  Vol. 
  67, 
  Art. 
  24. 
  

  

  53649— 
  25f 
  1 
  

  

  