Manchester Memoirs, Vol. lix. (191 5), No. 1. 9 



The specimens are interesting on account of the dis- 

 tribution of the colour in rings or bands. 



In the smallest specimen the stalk is of a deep yellow 

 colour. The colour of the rachis varies at different parts, 

 namely, it is white for about half the distance from the 

 base where it has a light-brown band, above this it is 

 again white, changing to a pale red at the apex. In the 

 second specimen the stalk is a yellowish-red. The rachis 

 has a white ground for half the distance from its base, in 

 this part the coenenchyme and calyces are white, but the 

 anthocodiae appear as reddish brown patches, following 

 this there is a broad band in which the coenenchyme, 

 calyces and anthocodiae are red in colour, lastly, the 

 apical portion of the rachis resembles the basal portion. 

 The third and fourth specimens resemble one another in 

 colour. The stalk is light yellow, the lower portion of 

 the rachis has a white ground, and the anthocodiae are 

 light brown, then follows a band in which the coenen- 

 chyme, calyces and anthocodiae are all light-brown ; 

 lastly, the apical part has a white ground, and the antho- 

 codiae and calyces are light brown or light pink. 



The wall of the stalk is very thin, and thus has a 

 bladder-like appearance. The stalk is sharply marked 

 off from the rachis. The calyces of the autozooids and 

 siphonozooids are both extremely obvious, those of the 

 former have six small and two larger teeth. 



The form of the colony is somewhat cylindrical, and 

 the body is only slightly curved inwards. The relative 

 length of stalk and rachis is 1 ; 2*5 or 1 : 3. This ratio 

 apparently varies according to the degree of preservation. 

 On one side about the middle, the stalk decreases very 

 much in width, basally it ends bluntly. 



The following dimensions were taken from three 

 specimens : — 





