﻿126 
  

  

  DTSCOGLOSSIDiE. 
  

  

  Vomerine 
  teeth 
  in 
  a 
  long, 
  straight 
  or 
  slightly 
  

  

  curved 
  series, 
  narrowly 
  interrupted 
  in 
  the 
  middle, 
  

  

  behind 
  the 
  choanse, 
  and 
  extending 
  outwards 
  to 
  the 
  

  

  Fig. 
  48. 
  vertical 
  of 
  their 
  outer 
  borders 
  or 
  even 
  

  

  a 
  little 
  beyond. 
  Tongue 
  moderately 
  

  

  large, 
  circular, 
  thick, 
  adherent, 
  scarcely 
  

  

  free 
  behind. 
  

  

  Head 
  much 
  depressed, 
  a 
  little 
  broader 
  

   than 
  long 
  ; 
  snout 
  rounded 
  or 
  obtusely 
  

   pointed, 
  projecting 
  considerably 
  be- 
  

   yond 
  the 
  mouth, 
  as 
  long 
  as 
  or 
  a 
  little 
  

   Open 
  mouth. 
  logger 
  than 
  the 
  diameter 
  of 
  the 
  orbit 
  ; 
  

   no 
  canthus 
  rostralis 
  ; 
  dorsal 
  region 
  slightly 
  grooved 
  ; 
  

   nostril 
  a 
  little 
  nearer 
  the 
  tip 
  of 
  the 
  snout 
  than 
  the 
  

   eye 
  ; 
  eye 
  moderate 
  ; 
  interorbital 
  space 
  as 
  broad 
  as 
  or 
  

   a 
  little 
  narrower 
  than 
  the 
  upper 
  eyelid, 
  and 
  equal 
  to 
  

   the 
  distance 
  between 
  the 
  nostrils; 
  tympanum 
  measur- 
  

   ing 
  three-fifths 
  to 
  two-thirds 
  the 
  diameter 
  of 
  the 
  eye, 
  

   sometimes 
  feebly 
  distinct, 
  often 
  completely 
  hidden. 
  

  

  Fig. 
  49. 
  

  

  Heads 
  of 
  males, 
  upper 
  views. 
  A. 
  Coruniia. 
  b. 
  Oran. 
  c. 
  Tlemseu. 
  

  

  D. 
  Sardinia. 
  

  

  