FREQUENTLY t'sKL* IN CONCHOLOGN 



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Coarclatus, having the aperture with- 

 out a hollow behind ; contracted, 

 drawn together ; opposed to Ef- 

 fusus. 



Cochlea, a univalve shell. 



Cochleatus, like a snail's shell. 



Columella, a column, the centre pillar 

 or axis of the spiral shells. 



Complicatus, folded up, wrapt to- 

 gether. 



Compressus, applied to bivalves that 

 are but a little convex. 



Concameratiis, chambered, arched. 



Concatendtiis, chained together. 



Concavus, concave. 



Concha, a bivalve shell. 



Confertus, crowded. 



Conicus, conical. 



Connivens, approaching, converging. 



Contortus, twisted. 



Convexits, when the valves are con- 

 siderably convex. 



Convolutus, rolled up ; with one end 

 enveloped, the other conspicuous. 



Cordatus, like a heart. 



Cordiformis, shaped like a heart. 



Coriaceus, like leather. 



Corniformis, horn-shaped. 



Cornulus, horned. 



Coronalus, crowned with a circle of 

 raised knobs or points round the 

 spire. 



Corticatiis, having a rind or bark. 



Costw, ribs. 



Costatus, ribbed. 



Crassiusculus, thickish, rather thick. 



Crassus, thick. 



Crenatus, scolloped or notched. 



Crispus, curled or bent waving. 



Cristatifs, crested. 



Crusla, the shell of a Lobster or Crab, 



&c. 

 Cucullcilus, hooded. 

 Ciineiformis, wedge-shaped. 

 Cuspidatus, with a point like a spear. 

 Cylindraceus, like a roller or cylinder. 



Dccollaius, with the top or apex as 

 if broken or cut off. 



Decurreiis, running down. 



Decussalus, with longitudinal and 

 transverse ridges or hollows cross- 

 ing each other. 



Deflexits, bent downwards. 



Dehiscens, gaping, opening wide. 



Densus, thick, close. 



Dens, a tooth. 



Dentatus, toothed. 



Denticulatus, with little teeth. 



iJeorsiim, downward. 



Depressus, depressed. 



Desincns, coming to an end. 



Dexlrorsum, on the right side. 



Didijmits, double. 



Difj'usits, spreading. 



Digestus, set in order. 



Digital us, having the outer lip divided 

 into lobes, or fingered. 



Dilalatus, extended, stretched out. 



Dimidiatus, divided into two parts. 



Discus, the centre or middle part of 

 each valve. 



Disjunctus, disjoined. 



Dissectus, cut or divided. 



Dissepimentiim, a thin partition like 

 a skin. 



Dislortus, mis-shapen. 



Divaricalus, spreading wide asunder. 

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