40 POPULAR HISTOUY OF THE AQUARIUM. 



" Other specimens have occurred, of a similar aspect and 

 conformation, chiefly from four to six inches high, but none 

 above nine. One beautiful and luxuriant specimen, four 

 inches high and diverging four inches, might have been 

 circumscribed by au ellipse two inches and a quarter 

 across. By gross computation, 1200 hydrse, deeper co- 

 loured than peach-blossom, decorated this latter specimen. 

 The head, or hydra, of this Zoophyte is deciduous."*' 



" Full many a gem, of purest ray serene. 

 The dark unfathom'd depths of ocean bear ! 

 Full many a flower is born to blush unseen. 

 And waste its sweetness on the desert air I" 



TUBULARIA INDIVISA. 



In this Zoophyte, the polypes are fixed at the end of 

 tubes which do not branch, but each one, or nearly each 

 one, of which proceeds directly from the creeping fibre by 

 which it is attached. 



The genus Tuhilaria is thus defined by Johnston : — 

 " Polypidom horny, fixed by a creeping fibre, erect, fistular, 

 and unbranched ; the tube filled with a semifluid medulla. 

 Polypes placed at the extremities of the tubes, non -retractile, 

 fleshy, furnished with two circles of filiform, smooth ten- 



