cin 



cor 



Plate III. Stereogram of the structure of the front end of the body of Lamellisabella zachsi, in 

 ventral view. 



ad - anastomosing canal of the coelomoducts; am - ampulla of coelomoduct; с - tip of cephalic- 

 lobe; car - intertentacular cavity; cex - distal canal of coelomoduct; cin - proximal canal of 

 coelomoduct; сое - coelomic canal of tentacle; сое I - protocoele; сое II - mesocoele; cor - heart; 

 ct - tentacular crown; ex - excretory portion of coelomoduct; /- keel of bridle; gt - globular 

 gland; pc - external pore of coelomoduct; m - "renal sac" - an invagination of the ventral wall 

 of the dorsal vessel in which lie the excretory portions of the coelomoducts; va - afferent vessel of 

 tentacle ; vd - dorsal vessel ; ve - efferent vessel of tentacle ; vl - lateral cephalic vessel ; vm - median 

 cephalic vessel; vv - ventral vessel. (After Ivanov, 1960a.) 



