A FEW MEDUS/E NEW TO WOODS ROLL. 19 



oral orifice which is simple and slightly four lobed. Tentacles 

 four, unequally developed, probably due to immaturity. The 

 two on opposite sides (right and left of the figure) presenting the 

 relative size and form, which are quite unique among medusae of 

 this family (the Codonidae), though somewhat like greatly exag- 

 gerated tentacles of Dipurena. In addition to the enlarged termi- 

 nal knobs which are densely packed with nematocysts, each 

 teniacle has a distinct ring of nematocysts about the middle of 

 the stalk as shown in the figure. In size the medusa measured 

 in life about 2 mm. in height by about 1.5 mm. in breadth. The 



Fir.. 6. 



exumbrellar surface was irregularly and sparingly dotted with 

 minute clusters of nematocysts. In color the specimen was bril- 

 liantly marked, the terminal bulbs of the tentacles being at the 

 apex brilliant carmine tinged with green, and their basal portion 

 duller reddish-brown ; the basal bulbs similarly reddish-brown 

 with a dense black ocellus on the outer side. The manubrium was 

 tinged with pale green. It should have been said that the two un- 

 developed tentacles were not equally so, one being in all but size 

 quite like the larger pair while the smaller one, though much 

 smaller than the other, was evidently lacking in age only to attain 

 to the size and form of the others. 



The specimen (only a single one being taken) bears indications 

 of immaturity ; e.g., the unequally developed tentacles, absence 

 of distinct gonads, and the nematocysts of the exumbrellar sur- 

 face. In view of the similarity of swimming habit, coloration, 



