Microscopical Essays, 440, 



motion by which it is completely difengaged, leaving the integu- 

 ment behind, which the vorticella freed itfelf from by repeated 

 ftrokes with it's tail. A young one almoft difengaged is feen at b, 

 Fig. 38 ; another embryo, c, was left adhering to the fhell. 



There are four more fpecies of the vorticella mentioned by 

 Linnaeus, which are the vorticella encrinus, the vorticella poly- 

 pina, the vorticella ftel lata, and the vorticella ovifera, which do not 

 come properly within our plan. The vorticella polypina will be 

 defcribed hereafter. There is, however, another little animal, of 

 which we have given a figure in Plate XXII. and which Linnaeus, 

 in a former edition of the Syftema Naturae, placed among the 

 hydrse, but which he has fmce removed, and placed amongft the 

 tubularia • and as I do not feel myfelf competent to controvert 

 the propriety or impropriety of the former or prefent arrange- 

 ment, the little creature mull here take a folitary fituation, and 

 ftand without a companion. 



Tubularia Campanulata. Fig. 32, Plate XXII. 



Reptans, tubis campanulatis. Creeping, with campanulated 

 tubes. 



it is called by Mr. Baker the bell-flowered, or plumed animal. 



Thefe little creatures dwell in colonies together, from ten to 

 fifteen in number, living in a kind of (limy mucilaginous cafe, 

 which, when expanded in the water, has fome refemblance to a 

 bell with it's mouth upwards. Thefe bells, or colonies, are to 



