280 BULLETIN OF THE 



"bell walls are thick, especially at the apex, although there is no apical pro- 

 tuberance. The surface is smooth ; its walls very transparent. The bell 

 cavity, when seen in profile, is rectangular. The floor opposite the bell en- 

 trance is almost flat, and not concave, as in many other medusae. This char- 

 acteristic in the shape of the bell cavity is noticeable oven in young stages. It 

 diff'ers in this respect from the figure given l)y Fritz Miiller of Liriope Catha- 

 rinensis. 



Upon the walls of the bell cavity there are found two kinds of chyniiferous 

 tubes. Four of these vessels are radially arranged, and pass from a circular 

 tube about the bell opening to a highly flexible proboscis, along the sides of 

 which they extend, opening eventually into the stomach at the extremity of the 

 proboscis. These tubes are narrow, unbranched, and without lateral append- 

 ages. The sexual glands hang from the radial tubes, extending about two 

 thirds their leiigth, in the inner surface of the bell. They end at the point 

 where the radial vessels bend at right angles to the outer walls of the bell. 

 Midway between each pair of radial tubes, arising from the Ijell margin and 

 extending in the bell walls about one third the height of the cavity, there is a 

 single blindly ending centripetal canal (d), characteristic of the adult. These 

 tubes (l) are four* in number, and do not bear ovaries. 



The largest and most important appendage to the bell is the long, slender, 

 and highly flexible manubrium or proboscis. It springs from the centre of the 

 floor of the bell cavity, and, when the jelly-fish is quiet in the water, hangs far 

 outside the vail. At other times it is so contracted that its termination barely 

 projects beyond the bell margin. It consists of two parts, a hyaline base, which 

 resembles in character the bell walls, and a distal pink-colored stomach with a 

 terminal mouth. The only structures which can be recognized in the peduncle 

 of the proboscis are the four chymiferous tubes just below the surface. These 

 are extensions of the radial chymiferous tubes, which have been described 

 above. These tubes open into the stomach near the distal end of the pro- 

 boscis. The distal end of the peduncle of the proboscis is continued inside the 

 stomach into a conical projection or tongue. In fig. 9 we have a view of the 

 distal end of the manubrium with the walls of the stomacli reversed to show 

 the projecting tongue. 



The stomach of Gloxsncodon is a bag-shaped structure with pinkish walls, 

 situated at the distal extremity of the manubrium. When the mouth is 

 expanded, as in the figure, it assumes a quadrangular shape. The edges of the 

 lips are lined with clusters of lasso-cells (fig. 9) arranged in bundles equidis- 

 tantly arranged around the border of the mouth. Similar cells are described 



* In the only complete drawing of the adult wliicli we have, there is only a single 

 centripetal cannl between each pair of ovaries. There are probably three such struc- 

 tures instead of one in that position. Tliis can be .seen in sketches of a portion of the 

 bell margin which I have not copied. The medial of these three canals, wliich is that 

 figured in fig. 1, is larger than the two lateral, which are little more than slight pro- 

 tuberances. 



