18,1 Light: Philippine Scyphomedusan Jellyfishes 45 
Rhizostomata lorifera Vanhoffen, 1888 
Genus THYSANOSTOMA L. Agassiz, 1862 
Thysanostoma thysanura Haeckel. 
Thysanostoma thysanura HAECKEL, System der Medusen (1880) 625, 
taf. 39, figs. 1-9. MAYER, Medusae of the World 3 (1910) 692, fig. 
420; Pub. Carnegie Inst. Washington 212 (1915) 197. 
This medusa is known from Manila Bay from two perfect 
specimens collected by Dr. Shaw, one in the summer of 1919, 
and the other in July of 1920. They agree closely with Mayer’s 
description in ‘“Medusae of the World.” 
