14 MUSEUM, BROOKLYN INSTITUTE OF ARTS AND SCIENCES. 
over each diverticulum. The manubrium in W. geramifera is long and slen- 
der while that of AV. oruata is short and broad; but these differences may 
be all due to the absence of sperm or ova in W. gemmifera. AV. ornata is 
abundant at the Bahamas and is occasiiuially found at the Tortugas. AA". 
gemmifera is found at the Tortugas and off the Carolina coast. 
Laodicea ulothrix, II a eg k el. 
Fig. 30, Plate IV. 
Laodice ulothrix, Haeckel, 1879; Das System der Medusen, p. 133, Taf. VIII., Fig. 5-7. 
Bell about 20 mm. in diameter, and a little flatter than a hemisphere. 
70-100 stiff tentacles about one-third as long as the bell-diameter. These have 
their distal ends coiled tightly. The tentacle-bulbs are large and hollow, and 
there is a dark brown ectodermal ocellus upon the inner (sub-umbrella) side 
of each bulb. Some of the tentacle-bulbs show spur-like projections upon the 
exumbrella side. Small sensory clubs and coiled cirri are scattered between 
the tentacles. The cirri are usually somewhat less numerous than the ten- 
tacles, while the clubs are about equal in number to the tentacles. There 
are no (ttoliths. There are four straight, narrow radial tubes. The nmnu- 
brium is short and cruciform in cross section, with four recurved lips. 
The gonads are found on the four radial canals adjacent to the manu- 
brium. The entoderm of the manubrium, gonads, and tentacle-bulbs is varia- 
ble in color, being dull pink, brownish or greenish white. This medusa is 
abundant at the Canary Islands, Tortugas, and Bahamas. 
Tiaropsis punctata, Mayer. 
Fig. 21, Plate III. 
Mayek, a. G., 1900; Biill. Mus. Comp. Zool. at Harvard Coll., Vol. XXXVII., p. 49, Figs. 
60-63, PI. 22. 
Tiaropsis diademata, Fewkes, J. W.. 1882; Bull. Mus. Comp. Zool. at Harvard Coll., Vol. 
IX., p. 277, PI. VII., Figs. 13-14 
Bell al)out 4 mm. in diameter, bluntly cone-shaped or hemispherical, Four 
radially situated tentacles with well developed basal-bulbs and coiled distal 
ends. I''our interradial tentacle-bulbs, and eight sense organs, two in each 
quadrant. Each sense organ consists of a jHKket-like fold of the velum, con- 
taining 8-13 otoliths and immediately above them a large pigmented eye spot. 
Four straight, narrow radial canals upon the upp(*r portion of which the 
gonads are situated. The niannbrium is wide and llask-like, with four 
