590 THE AMERICAN NATURALIST. [VoL. XXXV. 
Oceania languida A. Ag. (FIG. 57). 
Medusa ovoid when set free, becoming hemispherical at maturity ; radial 
canals four; marginal tentacles numerous in adult specimens ; otocysts 
eight, situated near bases of tentacles in young specimens, but becoming 
numerous as medusz mature, increasing in number according to A. Agassiz 
by subdivision of the primary otocysts; gonads of brownish or pink or 
green color, and borne on distal portions of canals. Hydroid (?). 
Oceania caroline Mayer. 
Bell less than a hemisphere, about 14 mm. in diameter; marginal tenta- 
cles sixteen, with large hollow basal bulbs, also numerous rudimentary ten- 
tacular bulbs interspersed ; otocysts 64, symmetrically disposed; manubrium 
flask-shaped, and with four simple oral lobes ; 
gonads borne on distal portions of radial 
canals; tentacular bulbs bright yellow-green. 
Charleston Harbor. 
(Condensed from Mayer’s description, Az/7. 
Mus. Comp. Zool., Vol. XXXVII, No. 1.) 
Fic. 56. Fic. 57. 
Fic. 56. — Tiaropsis diademata Ag. (After A. Agassiz.) @, young medusa of same. 
Fic. 57.— Oceania languida A. Ag. (After A. Agassiz.) 
O. singularis Mayer. 
Bell about two mm. in diameter, with lens-shaped apical projection ; 
marginal tentacles 16, with hollow basal bulbs, and with 16 rudimentary 
tentacles symmetrically disposed ; otocysts 32; gonads borne on upper por- 
tion of radial canals ; colors of tentacular bulbs and radial canals in region 
of gonads turquoise-green. Newport Harbor, R. I. 
(Condensed from Mayer’s description ; cf. op. czt.) 
Epenthests foleata McCr. 
(Oceania foleata Ag.) 
Medusa with low, subhemispherical bell, about five mm. in diameter ; 
marginal tentacles sixteen, rather slender and with well-developed basal 
