848 AN ENTOPBOCTAN POLYZOON (BARENTSIA BENEDENI). 



gr., granular masses. 



int., intestine. 



juv., young individual. 



l.m., longitudinal muscles. 



m., mouth. 



med., medullary protoplasm. 



n., node. 



ce., oesophagus. 



ov., ovary. 



p., papilla, often perforated. 



p.n., partition node, between bud and primary individual. 



pr.i., primary individual. 



r., rectum. 



rep., reproductive organs. 



sec.i., secondary budded individual. 



sn., stolon. 



sn.i., stolon polypiferous internode. 



som.m., somatic muscle. 

 sph.int., sphincter muscle of intestine. 



sph.m., sphincter muscle of atrium. 



st., stomach. 



t., testes. 



Note. — The transverse markings on the internodes are wrinkles in the cuticle. 



Fig. 1. Barentsia benedeni, with extended calyx viewed laterally, from Hull. x 140. 



Fig. 2. Barentsia benedeni, with extended calyx viewed from above, from Hull. x 140. 



Fig. 3. Barentsia benedeni, calyx contracted, from Ostend (specimen received from Professor A. 

 Foettinger). x 140. 



Fig. 4. Barentsia benedeni, Hull specimen : budding of secondary individual from internode of stalk. 

 xl40. 



Fig. 5. Barentsia. gracilis, from Ostend : jointed and simple individuals (specimens received from 

 Professor Foettinger as typical examples of Pedicellina belgica, van Beneden, from the locality where 

 the type specimens were obtained). x 140. 



Fig. 6. Barentsia gracilis, simple individual, from off Calf of Man. x 140. 



Fig. 7. Barentsia gracilis, jointed individual, from off Calf of Man. x 140. 



