34 BULLETIN: MUSEUM OF COMPAKATIVE ZOOLOGY. 



PANDEA, Lesson, 1837. 

 Pandea violacea, Agassiz and Mater. 



Fig. 1, Plate 1. 



Pandea violacea, Agassiz, A., and Mayer, A. G., 1899, Bull. Mus. Comp. Zool. 

 Harvard Coll., Vol. XXXII. p. 160. 



Specific Characters. — The bell is pear-shaped and 4 mm. in height. The 

 bell walls are only of moderate thickness. There are 32 tentacles, 8 of these 

 are each about 3 times as long as the bell height, and 24 are small and rudi- 

 mentary. The basal bulbs of the long tentacles are hollow. There are 32 

 ocelli, one on each tentacle bulb. The velum is well developed. The proboscis 

 is flask-shaped, its proximal portion being distended by the 4 gonads. The 

 lips are simple and cruciform. There are 4 straight radial tubes, and a broad 

 circular vessel. The entoderm of the proboscis and tentacle bulbs is of a deli- 

 cate pink. A green streak runs along the outer surface of the entodermal 

 lining of the radial canals. The ocelli are purple in color. The medusa is 

 common at the Tortugas, Florida, throughout the summer. We have found a 

 species at the Fiji Islands that appears to be identical with the Tortugas form. 

 Our figure is drawn from a specimen found at the Tortugas. 



TIARA, Lesson, 1843. 

 Tiara superba, nov. sp. 



Fig. 39, Plate 16. 



Specific Characters. — The bell is 5 mm. in height and possesses a small apical 

 projection. There are 4 long hollow tentacles and 12 small rudimentary 

 tentacles. A brilliant red eye-spot is found in the ectoderm of the outer sur- 

 face of each tentacle bulb. The velum is well developed. There are 4 broad 

 straight-edged radial tubes and a broad circular vessel. The proboscis is very 

 broad and the lips are surrounded by complexly fimbricated lappets. The 

 gonads are found in 4 sharply folded, radially arranged regions in the upper 

 portion of the proboscis. The proboscis is bound to the radial tubes by means 

 of 4 mesenteries. The entire gelatinous substance of the medusa is of a deli- 

 cate rose-pink. The entoderm of the proboscis and tentacles is of a rich rose- 

 color, and the entodermal core of the proboscis is emerald-green. This 

 medusa makes its appearance in June and continues to be common throughout 

 the summer at the Tortugas, Florida. 



