391 GLOSSARY. 



Nodose, having knobs or swellings. 

 Nodule, a little knot-like eminence. 



Oblique, nmning sideways. 



Obsolete, partially indistinct, not well defined. 



(Esophagus, the gullet. 



Opake, not transparent. 



Operculum, a lid or cover. 



Ordinate, when spots, etc., are placed in rows. 



Orifice, an opening ; the mouth. 



Oval, having the longitudinal t^vice the length of the transverse 

 diameter. 



Ovary, the part in which ova or eggs are formed. 



Ovate, shaped like the longitudinal section of an ogQ. 



Oviparous, produced by eggs hatched after exclusion from the 

 body. 



Ovoviviparous, when the eggs are hatched in the body of the ani- 

 mal and excluded ahve. 



Ovisac, egg-bag. 



Ovoid, approacliing to the shape of an egg. 



Pal mated, shaped like the hand \^-ith the fingers extended. 



Panicled, in a loose spike. 



Parasitic, existing on some other body. 



Parenchyma, spongj' matter ; the pith. 



Parietes, walls. 



Pectinated, resembhng the teeth of a comb. 



