SIBOGLINUM SUMATRENSE 



313 



В 



It 



■~s 



о - TflS 



& 



m 



pa 



0.1 



MM 



V — mis 



sv 



Fig. TT133. Siboglinum sumatrense : A - fore-part of the body from the dorsal, and 5, from the 

 ventral side; С - the distal part of the tentacle; D - part of a girdle; E - toothed platelet from the 

 side ; F - part of the postannular region ; G - ventral postannular papilla. 



с - cephalic lobe ; da - anterior teeth ; dp - posterior teeth ; /- bridle ;-gt- flask-shaped glands ; 

 ms - mesosoma ; mts - metasoma ; p - plaque ; pa - papillae ; pi - pinnules ; ps - protosoma ; 

 s 1 - groove between the protosoma and mesosoma ; r - groove between the mesosoma and meta- 

 soma; sc - dorsal shield; sv- ventral sulcus; /-tentacle; v - ventral papilla; vd - dorsal blood 

 vessel ; vv - ventral vessel seen by transparency. 



