416 



TEXTBOOK OF ZOOLOGY 



m 



m. 



-BUCCAL FUNNEL 

 -TONGUE 

 -NASAL SAC 



-OESOPHAGUS 

 -PITUITARY POUCH 



BRAIN 



PHARYNX 



NOTOCHORD 



-INTERNAL GILL 

 PORE 



-EXTERNAL GILL 

 PORE 



-GILL POUCH 



-GILL LAMELLAE 



■BRANCHIAL 



CARTILAGE 

 •PERICARDIAL 



CARTILAGE 



-LIVER 

 -MYOTOMES 



-INTESTINE 

 -KIDNEY 



-TESTIS 



-PRONEPHRiC 

 DUCT 



ANUS 



-URINOGENITAL 

 APERTURE 

 URINOGENITAL 

 SINUS 



Fig 224 — Lateral view of dissection of Entosphenus to show principal organs. 



(Drawn by Titus C. Evans.) 



