160 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
DESCRIPTION OF SPECIES. 
I. HYDROMEDUSZ. 
Halitiara formosa, Fewxes. 
\ 
Halitiara formosa, FEwxes, J. W., 1882, Bull. Mus. Comp. Zodl., Vol. IX. p. 276, 
Plate IV. Fig. 2. 
This Medusa is found in both Atlantic and Pacific Oceans. It is exceedingly 
abundant throughout the summer at the Dry Tortugas Islands, Florida, and 
we also found it in considerable numbers late in December in Suva Harbor, 
Viti Levu Island, Fiji Islands. The entoderm of the proboscis and tentacle 
bulbs of the male is usually dull brown or drab, while in the female it is bright 
green. 
Pandea violacea, nov. sp. 
This Medusa is common throughout the summer at the Dry Tortugas Islands, 
near the entrance to the Gulf of Mexico. We also obtained several specimens 
in Suva Harbor, Fiji Islands, early in January, 1898. We hope soon to pre- 
sent a figure of the Medusa in a paper upon “ Medusz from the Dry Tortugas,” 
that is to be published in the Bulletin of the Museum of Comparative 
Zodlogy. At present we will content ourselves with a description of the 
animal. ' 
Generic Characters. Pandea, Lesson, 1843. Tiaride with numerous tenta- 
cles, 8-16 or more arranged in a single row. The outer surfaces of the tentacle 
bulbs bear ocelli. There is no peduncle to the proboscis. The upper edges ~— 
of the proboscis are bound to the 4 radial tubes by means of 4 mesenteries. 
There are 4 simple gonads, with smooth outer surface. 
Specific Characters. The bell is 4 mm. in height, and is pear-shaped. The 
bell walls are of only moderate thickness. There are 32 tentacles. Eight of 
these are large, being about three times as long as the bell height ; and 24 are 
rudimentary. The bulbs of the large tentacles are hollow. Each and every 
tentacle bulb bears a single ocellus, making in all 32 ocelli. The velum is 
well developed. The proboscis is flask-shaped, its proximal portion being dis- 
tended by the 4 genital glands. The lips are simple and cruciform. There 
are 4 straight radial tubes and a broad circular tube. The color of the ento- 
derm of the proboscis and tentacle bulbs is delicate pink or light purplish 
brown. A green streak runs along the outer surface of the entoderm of each 
of the 4 radial canals. The ocelli of the tentacle bulbs are purple in color. 
