﻿258 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  The 
  bullfrog 
  {Rana 
  cateshiana) 
  is 
  the 
  largest 
  of 
  Korth 
  American 
  

   frogs, 
  reaching 
  a 
  body 
  length 
  of 
  over 
  8 
  inches. 
  It 
  has 
  much 
  the 
  same 
  

   geographical 
  range 
  as 
  the 
  spring 
  frog. 
  The 
  body 
  is 
  very 
  bulky 
  and 
  

   clumsy, 
  the 
  legs 
  are 
  thick, 
  and 
  the 
  head 
  is 
  broader 
  than 
  in 
  B. 
  claniata. 
  

   A 
  fold 
  of 
  skin 
  extends 
  from 
  the 
  eyes 
  over 
  the 
  tympanum, 
  around 
  the 
  

   insertion 
  of 
  forearm, 
  and 
  disappears 
  on 
  the 
  breast. 
  There 
  are 
  no 
  folds 
  

   on 
  the 
  sides 
  of 
  back, 
  as 
  in 
  B. 
  clamata 
  and 
  E. 
  virescens. 
  The 
  skin 
  is 
  

   slightly 
  rough 
  above. 
  The 
  tympanum 
  is 
  larger 
  than 
  eye, 
  with 
  the 
  same 
  

   sexual 
  diflerences 
  as 
  in 
  B. 
  clamata. 
  The 
  tibia 
  is 
  slightly 
  shorter 
  than 
  

   the 
  femur. 
  The 
  hind 
  toes 
  are 
  fully 
  webbed. 
  The 
  complete 
  webbing 
  of 
  

   the 
  fourth 
  toe, 
  with 
  the 
  absence 
  of 
  dorsal 
  folds 
  of 
  skin, 
  furnishes 
  means 
  

   of 
  distinguishing 
  this 
  from 
  the 
  spring 
  frog. 
  

  

  Common 
  Bullfrog 
  (Bana 
  cateshiana), 
  Male. 
  

  

  The 
  color 
  above 
  is 
  olivaceous, 
  brown, 
  or 
  ferruginous, 
  with 
  darker 
  

   blotches 
  half 
  the 
  diameter 
  of 
  the 
  eye, 
  more 
  or 
  less 
  uniformly 
  distributed. 
  

   The 
  color 
  is 
  sometimes 
  yellowish 
  green 
  without 
  blotches 
  or 
  other 
  mark- 
  

   ings. 
  The 
  hind 
  legs 
  are 
  barred 
  above 
  and 
  the 
  buttocks 
  blotched 
  with 
  

   nearly 
  black 
  markings. 
  The 
  lower 
  parts 
  are 
  white, 
  with 
  obscure 
  

   mottliugs 
  of 
  brown, 
  the 
  throat 
  sometimes 
  being 
  bright 
  yellow. 
  In 
  the 
  

   young 
  the 
  blotches 
  above 
  are 
  reduced 
  to 
  distinct 
  black 
  dots, 
  and 
  the 
  

   under 
  parts 
  are 
  yellowish 
  anteriorly. 
  The 
  habits 
  are 
  much 
  the 
  same 
  as 
  

   those 
  of 
  B. 
  clamata. 
  Both 
  species 
  pass 
  the 
  first 
  winter 
  in 
  the 
  tadpole 
  

   stage 
  and 
  are 
  said 
  under 
  unfavorable 
  circumstances 
  to 
  pass 
  even 
  the 
  

   second 
  winter 
  so. 
  This 
  fact, 
  with 
  the 
  solitary 
  habits 
  of 
  the 
  adult, 
  is 
  of 
  

   importance 
  to 
  the 
  culturist. 
  

  

  The 
  Western 
  frogs 
  are 
  not 
  well 
  known. 
  The 
  range 
  of 
  Bana 
  pretiosa 
  

   is 
  from 
  Montana 
  west 
  to 
  Puget 
  Sound, 
  thence 
  south 
  to 
  southern 
  Cali- 
  

   fornia. 
  It 
  is 
  the 
  common 
  frog 
  of 
  the 
  jS^orthwestern 
  States. 
  The 
  body 
  

   is 
  stout 
  and 
  depressed 
  like 
  B. 
  cateshiana. 
  The 
  head 
  is 
  obtuse, 
  rounded, 
  

   subtruncate, 
  and 
  broader 
  than 
  long. 
  The 
  eyes 
  are 
  small 
  and 
  the 
  

  

  