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CONCHOLOGY.— GLOSSARY. 



Lo'bated. — Rounded at the edges. 



Lobe. — A round projecting part. 



Lo'ligo. — Latin. A calmary. 



LoLiGo'psis. — A calmaret; a little 

 calmary. 



Longitu'dinal. — The length of the 

 shell from the apex to the base. 



LuBRi'ciTY. — Smoothness of surface, 

 slipperiness. 



Lu'nated, — Formed like a half-moon. 



Lunu'lated. — Crescent-shaped. 



Lu'nule, — A crescent-like spot or 

 mark situated near the anterior 

 and posterior slopes in bivalve 

 shells. 



Lu'niform. — In the shape of a ores- 

 cent or half-moon. 



Lutra'ria. — Genus of the family of 

 Inclusa. 



Mactra. — Latin. A kneading- 

 trough. Name of a genus of bi- 

 valves. 



Ma'brepore. — A hybrid compound 

 of the French 7nadre, spotted, and 

 Latin, porvs, a pore. Name of a 

 genus of zoophytes. 



Ma'gilus. — Name of a genus of gas- 

 teropods. 



Ma'gus. — Latin. Magical. 



Ma'lleus. — Latin. A hammer. A 

 genus of Ostracea. 



Ma'ndible. — From the Latin, man- 

 dihula, a jaw. The jaw of a bird. 



Man'tle. — The external fold of the 

 skin of moUusks. 



Ma'rgariti'fera. — Latin. From mar- 

 garitum, a pearl, and fero, I bear. 

 Pearl-bearing. 



Ma'rgin, — The whole circumference 

 or outline of the shell in bivalves. 



Ma'rginated, — Having a prominent 

 margin or border. 



Mediterra'nea. — Latin. Belonging 

 or relating to the Mediterranean. 



Medu'llary. — From the Latin, me- 

 dulla, the marrow. Belonging or 

 relating to nervous matter. 



Mkla'nia. — From tlie Greek, melas, 

 black. Genus of frosh- water gas- 

 teropods. 



Meleagri'na. — From the Greek, me- 

 leagris, a guinea-hen. A genus 

 of the family of Ostracea. 



Mem'branous. — Belonging or relat- 

 ing to membrane. 



Me'seiNtery. — From the Greek, me- 



sas, in the middle, and enteron, in- 

 testine. A membrane which 

 serves to retain the intestines in 

 their proper situation. 



Metamo'rphosis. — From the Greek, 

 meta, indicating change, and mot' 

 phe, form. Transformation. 



Microsco'pic. — From the Greek, mi. 

 kros, little, and skoped, I view. Di- 

 minutive. Not easily seen with- 

 out the aid of a magnifying-glass. 



Mi'tra. — Greek. A liead-band, or 

 diadem. A genus of gasteropods. 



Modio'lus. — Latin. A bucket. A 

 genus of mussels. 



Mo'lecule.' — An atom. 



Mollu'sca. — From the Latin, mollis^ 

 soft. Name of the second branch 

 of the animal kingdofn. 



Mo'llusk. — A soft animal. 



Mo'nodon. — From the Greek, monos^ 

 single, and odous, tooth. A genus 

 of the family of Trochoides. 



Monodon'ta. — Latin. Monodons. 



Mono'mya'ria. — From the Greek, 

 monos, single, and mudn, muscle. 

 Bivalves which have only one ad- 

 ductor muscle. 



Mu'cronate. — Ending in a sharp, 

 rigid point. 



Mu'ltivalve. — From the Latin, 

 multus, many, and valva, valves. 

 Composed of several, or more than 

 two calcareous pieces or valves. 



Multilo'cular. — From the Latin, 

 multus, many, and loculus, a lodge. 

 Many-chambered ; consisting of 

 several divisions. 



Mu'rex. — Latin. A shell-fish. A 

 genus of gasteropods. 



Mu'rices. — Plural of Murex. 



Mu'ricated. — Clothed with sharp 

 spines. 



Mu'scLE. — Fleshy fibres capable of 

 contraction and relaxation. 



Mu'scular. — Belonging or relating 

 to muscle. 



Mu'ssel. — An acephalous mollusk. 



My'a. — From the Greek, mudn, a 

 muscle. An acephalous mollusk. 



Mytila'cea. — From the Greek, mu- 

 tilos, a mussel. Name of a family 

 of mollusks. 



My'tilus, — Latin. A mussel. 



Na'cre. — From the Spanish, nacar, 

 mother-of-pearl. 



