91 



CLASS V. ANNELIDA. 



Remarks. Animals of this class have hereto- 

 fore been distributed among various divisions of 

 the Linnean verines ; but no naturalist was satis- 

 fied with such a distribution. These animals hav- 

 ing red blood, and soft jointed bodies, they seem- 

 ed to be excluded from all places in the system. 

 The French naturalists have obviated this diffi- 

 culty by creating a new class ; and placing this 

 class under the grand division Articulata. As 

 these animals have no limbs for walking, it was 

 necessary to make the definition of this division 

 more general referring to their jointed bodies,, 

 without specifying articulated limbs. They are 

 all reproduced like plants with perfect flowers. 



ORDER i. TUBICOLA. 



Semi-molluscous and encased in calcareous 

 tubes. 



SERPULA, (shell-worm,) animal a terebella : 

 shell univalve, tubular, generally adhering to oth- 

 er substances ; often separated internally by di- 

 visions at uncertain distances. 



SABELLA, (cased- worm,) animal a nereis, with 

 a ringent mouth and 2 thicker tentacula behind 

 the head ; shell tubular, composed of particles of 

 sand, broken shells, and vegetable substances ; 

 united to a membrane by a glutinous cement. 



AMPHITRITE, body projecting from a tube and 

 annulate ; peduncles or feet small, numerous ; 

 feelers 2, approximate, feathered 5 eyes none* In 

 sea and wet saml. 



