﻿DEVELOPMENT 
  AND 
  METAMORPHOSIS. 
  

  

  93 
  

  

  Fig. 
  38. 
  

  

  If. 
  i. 
  

  

  if. 
  I. 
  

  

  

  Transformation 
  of 
  the 
  mandible 
  and 
  hyobrancbial 
  apparatus 
  of 
  

   Pelodytes 
  pundatus. 
  (After 
  Ridewood, 
  ' 
  P. 
  Z. 
  S.,' 
  1897.) 
  Nine 
  

   different 
  stages, 
  No. 
  9 
  representing 
  the 
  adult. 
  Figs. 
  1 
  — 
  7 
  

   dorsal 
  view. 
  Figs. 
  8 
  and 
  9 
  ventral 
  view. 
  

  

  as. 
  Angulo-splenial 
  bone. 
  

   hh. 
  Basihyal. 
  

   chr. 
  Ceratobranchial. 
  

   ch. 
  Ceratohyal. 
  

   d. 
  Dentary 
  bone. 
  

   fi. 
  Lateral 
  foramen. 
  

   h. 
  Hyoidean 
  cornu. 
  

   Jia. 
  Convex 
  surface 
  by 
  which 
  

   the 
  ceratohyal 
  articulates 
  

   with 
  the 
  palato-quadrate 
  

   cartilage. 
  

   hbr. 
  Hyobranchial 
  plate. 
  

   Tigs. 
  Hyoglossal 
  sinus. 
  

   m. 
  Internal 
  or 
  mesial 
  part 
  of 
  

   the 
  mandibular 
  cartilage. 
  

  

  Lateral 
  part 
  of 
  same. 
  

   Mento-Meckelian 
  (symphy- 
  

   sial) 
  bone. 
  

   pa. 
  Anterior 
  process. 
  

   pal. 
  Antero-lateral 
  process. 
  

   ppl. 
  Postero-lateral 
  process. 
  

   s. 
  Space 
  enclosed 
  between 
  the 
  

   hyobranchial 
  plate 
  and 
  

   the 
  proximal 
  ends 
  of 
  the 
  

   first 
  and 
  second 
  cerato- 
  

   branchials. 
  

   sp. 
  Spiculesof 
  branchial 
  arches. 
  

   t. 
  Thyrohyal. 
  

   tf. 
  Thyroid 
  foramen. 
  

   V. 
  Yentral 
  splint-bone. 
  

  

  