70 



PART I. GENERAL ACCOUNT 



Fig. 48. Pogonophoran coelomoducts. A - transverse section of the excretory part of the coelomo- 

 duct of Oligobrachia dogieli; В -the same of Lamellisabella zachsi; С - ampulla of the coelomoduct 

 of Lamellisabella zachsi. 



ante - ciliated portion of ampulla ; ame - outer part of ampulla ; cut - cuticle ; ep - epidermis ; 

 fn - nerve layer of epidermis ; gr - excretory granules ; mc - circular muscle layer ; ml - longitudinal 

 muscle layer. (After Ivanov, 1960a.) 



