BAHAMA MEDUS/E. 15 
recurved lips. The entoderm of the maniibriiiiii, gonads, and tentacle-bulbs 
is reddish brown or dull yellow. Found at the Bahamas and Tortugas in 
summer. Not very common. 
Oceania McCradyi, Brooks. 
Figs. 23-2Jf, Plate III. 
Epenthesis McC.adyi, Brooks, W. K.. 1888; Stnclies Johns Hopkins Univ. Biol. Lab., Vol. 
IV., p. 147-163. Pis. 18-15. 
Mater, A. G., l'.)00 ; Bull. Mns. Comp. Zool. at Harvard Coll., Vol. XXXVII., p. .W, Figs. 
5G-59, PI. 21. 
Afhilt Mrdiisa : Bell tlat ; 12 mm. in diameter. 20-25 slender tentacles, 
with well developed basal-bulbs. 20-25 simple otocysts, each containing a 
single otolith, alternating with the tentacles in position. Velum well devel- 
oped. Manubrium quadrate, urn-shaped, and with four recurved lips. Four 
straight, slender, radial canals. Four gonads, each at the centre of a radial 
canal. Elongate, slightly curved, club-shaped hydroid blastostyles are borne 
on the gonads of the male medusa?. These blastostyles give rise to medusa? 
by budding. When set free the medusae are about 0.7 mm. in diameter and 
have eight tentacles alternating with eight otocysts. The ectoderm of the 
blastostyle is directly continuous with that of the gonad from which it arises, 
but its entoderm is not in direct connection with that of the parent medusa. 
Supporting lamella of the bell pink, entoderm of gonads, manubrium and 
blastostyles dull green sprinkled with gray pigment granules. Abundant in 
the Bahamas in summer; not found in winter. Rare at the Tortugas, Florida. 
It is interesting to observe that Hartlaub, 1897; Hydromedusen Helgo- 
hmds, has demonstrated that in Bougaiiivillia supreciliaris, and Margelopsis 
Haeckelii, some of the ova develop into planulne within the ectoderm of the 
parent medusa. 
Epenthesis folleata, McCrady. 
Figs. 16, 16a, Plate III. 
McCrady, J., 1857; Gymn. Charleston Harbor, p. 98. 
Brooks, W. K., 1882; Studies Johns Hopkins Biol. Lab., Vol. II., p. 138. 
Mayer. A. G., 190J ; Bull. Mus. Comp. Zool. at Harvard Coll., Vol. XXXVII.. p. 52, Fig. 139. 
PI. 41. 
Bell flatter than a hemisphere, and alxmt 5 mm. in diameter. Sixteen 
marginal tentacles, alternating with sixteen otocysts, each containing a 
single otolith. Fonr straight radial canals upon which, near (o the circular 
vessel, are the four gonads. Manubrium small and ui-n-shaped, with four 
