30O i N D E X. 



Apex. See Head and Summit. 



Jfporrhais, 225, 230. 



Appendix. See Prongs. 



Jrca, See Arks. 



Argenville, 28, 39, 87, 235. 



Argonauia. See Cymbium. 



Aristotle, ^7. 



Arksy 265. 



JJiroIepas, See Limpet. 



Juris Cochleay 1 87. 



Juris Marina. See Haliotis. 



Balaniy 98, 278, 279. 



Barnacles. See Anatifera. 



^^« Conchs. SeeTridacna. 



Beak, 116, 240. 



Beards. See Bivalves. 



Beauty. See Limpet, 



Bellonius, 57. 



Bilinguia. See Buccina. 



Bivalve, definition of, 132, 133,232, 



■ Syftem of, 233. 



of unequal valves and (hut clofe, 233, 244. 



of equal valves and Taut ciofe, 233. 



Bivalve 



