THE GLASSY .EQUOREA. 341 



Umbrella liemispheric, or sub-conic, about I5- inch 

 wide and f inch high. (Plate XXIII. fig. 1). Sub- 

 umbrella' very low, depressed and funnel-shaped in 

 in the ceiitre, which is quite perforate, the sides of 

 the funnel descending into a peduncle, which expands 

 into many (about 20) narrow, pointed, divaricating, 

 reflexed, furbelowed points, reaching to about the 

 level of the margin. The peripheral half of the sub- 

 umbrella is traversed by about ninety radiating lines, 

 (See fig. 2) w^hich are colourless but resemble bands 

 oi frosted or ground glass upon a body of clear glass. 

 They are swollen irregularly or attenuated in parts, 

 and where swollen appear to be penetrated by a cen- 

 tral vessel. The central portion of the sub -umbrella 

 a perfect circle, into which these lines run, is of the 

 frosted appearance, with radiating fine lines of crys- 

 talline, proceeding from the centre of each of the 

 marginal lines. In the funnel of the sub-umbrella, 

 lines of opaque white commence, alternating with the 

 crystalline lines, and gradually emerge into the fur- 

 belows of the peduncle (fig. 5). 



The vessels of the sub-umbrella appear to be in 

 many cases lost just before reaching the marginal 

 canal; some however can be traced into it. The mar- 

 ginal canal is very slender, and gives origin to a great 

 number of excessively attenuated white tentacles, two 

 or three to each vessel, or more than 200 in all. 

 Their bulbous origins are minute ; they are generally 

 much wrinkled and contorted, and adhere to any 

 object they touch. (See figs. 3 and 4),. 



I had turned the animal back-downwards for ex- 

 amination, and presently saw the funnel-like peduncle 



