220 EXPLANATION OF TERMS. 



Ciliated. Furnished with a fringe like eyelashes ; 



from cilia, an eyelash. 

 Cordate. Heart-shaped; from the Latin (cor) 



a heart. 

 Contracted. The mouth is called contracted, 



when the lips are not separated by any 



channel or sinus ; it then holds liquids 



though filled up to the brim. 

 Congener. One of the same genus ; from con 



together and genus, a kind. 

 Coronated. Crowned or girt towards the apex. 

 Cancellated. Crossed like the bars of a latticed 



window ; from cancelli, lattice. 

 Complicated. Folded together ; from con, with 



together, and plicare, to fold. 

 Digitations or Claws. Finger-like lobes ; from 



digitws, a finger. 

 Dextral. Righthanded, turning round the pillar 



from left to right, the usual course of the 



whorls ; from dextra, the right hand. 

 Dorsal. Belonging to the back ; from dorsum, 



the back. 

 Deciduous. Falling, not lasting ; from decido, I 



fall. 



Dentated. Toothed ; from dens, a tooth. 

 Diaphanous. Capable of transmitting light, 



transparent ; from the Greek ia (did) 



through, and <paivu (phaino) I appear. 

 Decorticated. Having the bark or outer skin 



taken off; from de, off, and cortex, bark. 

 Dissepiment. A division between two chambers 



