434 



Microscopical Essays. 



VoR TIC ELLA AnASTATICA. 



Vorticella anaftatica, compofita, floribus campanulatis ftirpe 

 muitiflora rigefcente, fee Fig. 13, 14, 15, 16, Plate XXI. 



Vorticella anaftatica, compound, with bell-fhaped flowers, and & 

 rigid ftem. 



Cluftering polype, fecond fpecies, Trembley, Philof. Tranl 

 vol xliv. part 2, p. 643. 



Thefe polypes form a group refembling a clufter, or more 

 properly an open flower ; this flower, or clufter, is fupported by 

 a ftem, which is fixed by it's lower extremity to fome of the 

 aquatic plants, or extraneous bodies, that are found in the water ; 

 the upper extremity forms itfelf into eight or nine lateral branches,, 

 perfectly fimilar to each other ; thefe have alfo fubordinate bran- 

 ches, whofe collective form much refembles that of a leaf. Every 

 one of thefe affemblages is compofed of one principal branch, ©r 

 nerve, which makes with the main ftem of the clufter an angle 

 fomewhat greater than a right one ; from both fides of this nerve 

 the fmaller lateral branches proceed ; thefe are ftiorter the nearer 

 their origin is to the principal branch,. 



At the extremity of the principal branch, and alfo of all the 

 lateral ones there is a polype or vorticella. There are others ort 

 both fides of the lateral twigs, but at different diftances from their 

 extremity. Thefe polypes are all exceeding fmal-1, and of a bell- 

 like figure ; near their mouth a quick motion may be difcerned* 

 though not with a fufEcient diftin&nefs to convey an adequate idea 



