APPENDIX. 351 



and present no unapt representation of a bunch 

 of the flowers of the Lily of the valley, whence 

 one species has been named Vorticella Conval- 

 laria. Some of these have branching, and others 

 simple stems, 1 but they are all spiral, and capable 

 of being lengthened or shortened at the will of 

 the animal, which is thus enabled to elevate or 

 depress its little blossoms, the mouths of which 

 are furnished with a double circlet of filamentary 

 tentacles, by the rotation of which, like the rest 

 of its tribe, it can produce a food-conveying 

 current to its mouth. Still nearer to the Polypes, 

 with which indeed it is arranged, is another 

 genus representing monopetalous flowers, named 

 by Ehrenberg, who found it in the Red sea, 

 Zoobotryon, or Animal-grape. This singular 

 animal production will scarcely arrange under 

 any of the Orders mentioned on a former occasion, 

 but it may be regarded as intermediate between 

 the Rotatories and the Polypes. Like the latter 

 it is a compound animal, consisting of a naked 

 branching stem ; its lower extremity, as may be 

 seen in the figure, 2 appears as if sending forth 

 numerous little radicles, and the branches termi- 

 nate in ovate germs, from which issue a multi- 

 tude of animalcules resembling monopetalous 

 bell-shaped flowers, with the mouth surrounded 

 by a filamentous coronet, each sitting upon a 



1 See above, p. 166. ~ PLATS I. B. FIG. 2. a. 



