he Canal connecting Posterior 



Enterocoele and Hydrocoele; 

 he Hypogastric anteroeoele : 



hip, 1-2 ,2-3 ,3-4 ,4-5. -Inter radial pouches of the 

 Hypogastric enteoocoele: 



hy Hydrocoele. 



ips Inner perihaeinal sinus. 



ipa::,5-i Intsrradia] pouch of Axial 



sinus. 

 lo Larval organ. 



n Mouth. 



ni First pair tentade nerves. 



nr Ne rve ring . 



02 Oesophagus. 



3 2_ Or 3.1 iislt . 



o?:" Outer perihaemal rin^. 



pc^ Par? canal . 



p Po 3 1 e rior snt erocoele s . 



pv '— Polian vesicles . 



rad 



n ^-Radial nerves. 



rg ) Radial grooves. 



rps Radial perihaemal, space 



sin a Sinus "a". 



sin "b" -Sinus "b" . 



st S' Lai. 



