36 THÉEL, PEIAPULIDS AND SIPUNCULIDS OF THE SWEDISH ANTARCTIC EXPEDITION 1901 — 1903. 



Fig. 68. The body cut open to show the internal organisation. 5 /i- 



oe, oesophagus witli its vessel; dr, dorsal retractors; mm, mesentery; s, segmental organs; a, anus 

 with muscles; fm, fixing muscles; de, coils of the intestine running downwards; uc, coils of the intestine 

 ruuning upwards; vr, ventral retractors; g, genital glands; ne, nerve-cord. 



Figs. 69—70. Phascolosoma ohliui n. 



Fig. 69. Front view of the tentacular crown. i2 /i. 



D, dorsal surface with ciliated sense-pads; V, ventral surface. 

 » 70. The body cut open to show the internal organisation. %• 



oe, oesophagus; de, coils of the intessine running downwards; uc, coils of the intestine ruuning up- 

 wards; dr, dorsal retractors; vr, ventral retractors; a, anus; s, segmental organs; g, genital glands; 

 ne, nerve-cord. 



Figs. 71 — 74. Phascolosoma anderssoni n. 



Fig. 71. The body cut open to show the internal organisation. */i. 



oe, oesophagus; de, coils of the intestine running downwards; uc, coils of the intestine running up- 

 wards; dr, dorsal retractors; vr, ventral retractors; a, anus with its muscles; d, divertiele; s, seg- 

 mental organs; g, genital glands; ne, nerve-cord; fm, fixing muscles; sm, spindle muscle. 

 Side view of the tentacular crown. 20 /i. 

 Dorsal view of the tentacular crown. 2 %- 

 Front view of the tentacular crown. -°/i. 

 V, ventral surface; D, dorsal surface. 



Fig. 75. Phascolion stronibi (Mont.)(?). 



Fig. 75. Front view of the tentacular crown, the oral protrusion having been cut away. 

 V, ventral surface; D, dorsal surface. 



» 



TI. 



» 



73. 



» 



74. 



Tryckt den 26 augusti 1911. 



Uppsala 1911. Almqvist & Wiksclls Boktryckeri-A.-B. 



