28 THÉEL. NORTHERN AND ARCTIC INVERTEBRATES. II, tTOAPULIDS, ECHIURIDS ETC. 



Plate II. 



Figs. 9—10. Priapulus Mcaiidatufs-DANiELSSEN from Fast Greenland. 



Fig. 9. Front view of the glans with the niouth. f-. 

 » 10. Ventral view of the foremost portion of the glans. f. 



Figs. 11 — 13. Halicryptus spinulosus v. Sieb. from Spitzbergen. 



Fig. 11. Ventral view of the animal. -f-. 

 » 12. The foremost part of the animal. f. 

 •> 13. View of the posterior extremity of the body. f. 

 gp. Genital pores. 



Figs. 14 — 15. Bonellia viridis Rolando from Koster Fjord. 



Fig. 14. Ventral view of the animal having the proboscis or frontal hood broken away. f. 

 » 15. The animal opened to show the internal structure. f. 



na. eloacal appendages or trees. -- ai. accessory intestiue (or vessel?). - bli. basa! parts of the 

 luioks or setae. — f. tunnel shaped opening of the segmental organ or uterine pouche. — - gb. genital 

 band. --i. intestinal eanal. -- n. nervous bord. — ph. pharynx. — s. .segmental organ or uterine 

 pouche. — v. vessels. 



Tryckt den 11 april 1900. 



Uppsala 1900. Almqvist & Wiksells Boktryckeri-A .-II. 



