60 CORYNLD/E. 



to | inch high ; POLYPARY composed of two coats, the 

 inner horn//, more or less cumulated, the outer membranous, 

 smooth, transparent ; POLYPITES* nearly cylindrical, much 

 elongated, very transparent, of a pearly white colour ; 

 tentacles numerous (40-50), very small and slender, set 

 in 7 or 8 imperfect rows ; GONOPHORES in a single sub- 

 verticillate cluster towards the lower part of the body, 

 shortly stalked. 



GONOZOOID with a nearly spherical UMBRELLA (at the time 

 of liberation) and a wide velum ; MANUBRIUM subcylin- 

 drical, carmine-coloured ; MARGINAL TENTACLES springing 

 from reddish tubercles. 



THIS species is one of the most beautiful of its tribe, and 

 is at once distinguished by the peculiar structure of its 

 polypary, the long subcylindrical body, and the very large 

 number and remarkably small size of the tentacles. It 

 sometimes forms dense tangled masses, but is not uncom- 

 monly found of much humbler size and simpler growth. 



Dr. Wright has described the thread-cells, which are of 

 two kinds oval and barbed on the tentacles, and long 

 and cylindrical on the body of the polypite. Both are 

 present within the polypary. 



We have an interesting observation by Allman on the 

 structure of the tentacles of the gonozooid*. He found 

 the peduncles of the sacs containing thread-cells (which 

 are set along the whole length of the arms) to be capable 

 of enormous elongation. They have the power of ex- 

 tending themselves to a length which considerably sur- 

 passes that of the longer or vertical diameter of the um- 

 brella. ' ' While the medusa continued to float undisturbed 

 through the water, the peduncle would remain projected 

 in a straight line, becoming at the same time amazingly 

 attenuated ; but on the least disturbance it would become 



* " Notes on the Ilyclroicla," Ann. N H. for July 1864. 



