SIB0GL1NUM CINCTUTUM 



209 





P-( 



^ 



3. 



Fig. 109. Siboglinum cinctutum: metasoma: A - zone of thickened papillae; В - region of the girdles 

 in ventral view; С - the same from the dorsal side; D - postannular region in dorsal view; 

 E - region of the girdles (in an aberrant specimen) from the dorsal side ; F - part of a girdle of 

 toothed platelets ; G - toothed platelet. 



an - girdles ; da - anterior group of teeth (only the bases of the teeth indicated) ; dp - hind group of 

 teeth; p - cuticular plaque; pa - papillae; sc - dorsal shield. {А, В, C, D after Ivanov, 1957a.) 



