﻿PAIEING 
  AND 
  OVIPOSITION. 
  73 
  

  

  females 
  of 
  the 
  same 
  species, 
  on 
  the 
  other 
  hand, 
  develop 
  

   on 
  the 
  back 
  and 
  limbs, 
  during 
  the 
  breeding 
  season, 
  

   peculiar 
  pearl-like 
  structures 
  of 
  the 
  epidermis, 
  which 
  

   are 
  regarded 
  as 
  sensory, 
  being 
  provided 
  with 
  a 
  special 
  

   innervation, 
  same 
  as 
  we 
  find 
  developed 
  during 
  the 
  

   spawning 
  season 
  in 
  the 
  males 
  of 
  many 
  Cyprinoid 
  and 
  

   Salmonoid 
  fishes. 
  These 
  organs 
  have 
  been 
  dealt 
  with 
  

   at 
  great 
  length 
  by 
  Huber 
  and 
  Maurer. 
  

  

  Fig. 
  28. 
  

  

  ,^<XA^%,^^\^ 
  

  

  B 
  

  

  f 
  ! 
  '4'-''* 
  "* 
  

  

  C 
  D 
  

  

  '//' 
  'f"^ 
  

  

  

  K 
  F 
  

  

  Sections 
  through 
  the 
  nuptial 
  asperities 
  of 
  males, 
  much 
  en- 
  

   larged 
  (after 
  F. 
  Lataste). 
  A. 
  Bana 
  temporaria. 
  b. 
  Rana 
  

   esculenta. 
  c. 
  Bufo 
  vulgaris, 
  d. 
  Bufo 
  calamita. 
  e. 
  Disco- 
  

   glossus 
  pictus. 
  F. 
  Bomhinator 
  pachypus. 
  

  

  The 
  males 
  of 
  most 
  of 
  our 
  Batrachians 
  make 
  them- 
  

   selves 
  conspicuous 
  during 
  the 
  pairing 
  time 
  by 
  their 
  

   voice, 
  whether 
  they 
  be 
  provided 
  with 
  vocal 
  sacs 
  or 
  

   not. 
  Although 
  there 
  are 
  some, 
  Bana 
  esculenta 
  and 
  

   Hyla, 
  in 
  which 
  the 
  clamour 
  is 
  not 
  restricted 
  to 
  the 
  

   breeding 
  season, 
  most 
  others 
  are 
  comparatively 
  mute 
  

   outside 
  that 
  period, 
  and 
  the 
  vocal 
  sacs 
  undergo 
  a 
  sort 
  

   of 
  regression, 
  as 
  is 
  especially 
  noticeable 
  in 
  Bana 
  

   temporaria 
  and 
  Bitfo 
  calamita. 
  

  

  