Fig. 136. Heptabrachia gracilis: A - front part of the body of a female from the ventral, and, 

 В - from the dorsal side ; С - zone of thickened papillae from the ventral side ; D - region of the 

 girdles from the ventral side; E - the same from one side; F - part of a girdle; G - toothed 

 platelet from one side ; H - spermatophore. 



an - girdles ; b - secondary annulus of the mesosoma ; с - cephalic lobe ; со - dorsal ciliated band ; 

 da - front group of teeth; dp - hind group of teeth;/- keel of bridle; ж - mesosoma; mts - meta- 

 soma; p - cuticular plaques; pa - papillae ; pa 1 - ventral papilla behind the girdles; pa 2 - metameric 

 rows of postannular papillae ; ps - protosoma ; s l - groove between the protosoma and the mesosoma ; 

 s 2 - groove between the mesosoma and the metasoma; sv - ventral sulcus; t - tentacles. (А, В, C, 

 D, E, H after Ivanov, 1957a.) 



