44 BY THE DEEP SEA. 



horn, and are formed of material translucent as the finest glass. 

 Each one of them, in fact, is a little crystal cornucopia, in 

 which is lodged one of the reproductive members of the com- 

 monwealth, a class totally distinct from that which is charged 

 with the function of alimentation. These graceful receptacles 

 are several times larger than the calycles, from the base of 

 which they spring, singly or in pairs, and within them the ova 

 are produced and the embryos matured which are to give rise 

 to new colonies." 



One of this group, the Lobster-horn or Sea-beard (Antenuu- 

 /ana antennind], shown at the back of the illustration of 

 acorn shells on page 183, has the calycles arranged in whorls 

 all around the axis, which produces a very singular appearance, 

 not at all unlike the antennas of some of the larger Crustacea. 



In the Creeping Bell (Calycella syringd) so common on sea- 

 weeds, etc., the calycles are more bell-shaped, and the mouth 

 of the bell is fringed with a series of large triangular teeth, 

 similar to the peristonie of many moss-fruits. When the poly- 

 pite withdraws into his calycle, these teeth bend inwards, and 

 so close the opening. 



Many of the forms of Jelly-fish to be described in the next 

 chapter, though they are described with separate names, are 

 now known to be merely stages in the history of some of these 

 Hydrozoa or Hydroid Zoophytes the developed free-swimming 

 gonophorae previously mentioned. 



A singular member of the group has the form of a jelly-fish, 

 but does not act as one. This was formerly named Lucer- 

 naria, but is now known as Haliclystus octoradiatus. It was 

 thought to swim like a jelly-fish, but it really creeps. Its form 

 is like a ladies' sunshade that, instead of being the ordinary 

 umbrella shape, tapers off to the stick at the top. What would 

 be the ferrule of the sunshade is the footstalk of Haliclystus. 

 By this footstalk it attaches itself to a weed, say, and hangs 

 down its eight arms with their connecting web, and by means 

 of a little knob on the edge of the web alternating with its 



