igog.] F. H. Stewart : Investigator sicarius. 293 



8. Schauinsland, H. .. .. "Zur Anatomie der Priapuliden, " 



Zool. Anzeiger, x, p. 171 (1887). 



9. Selenka, E. .. .. "Monograph of Gephyrea," Semper 



Reisen im Archipel der Philippinen. 



10. Shipley, A. E. .. .. " Phymosoma varians," Proc. Roy. 



Soc, 1890, p. 122. 



11. Shipley, A. E. .. .. "Phymosoma Weldonii," Quart. 



Journ. Micros. Soc, 1891, p. m. 



12. Sluiter, C. Ph. .. .. "Gephyrea of Siboga Expedition," 



Siboga Reports. 



The reports on the Gephyrea of the '' Belgica " and " Valdivia " expeditions 

 have not yet appeared. 



