388 



GLOSSARY 



T.EPiDOPTERA (Gr. Jepis, a scale ; pteron, a "vnng). An order of Insects, com- 

 prising Butterflies and Moths, characterised by possessing four wings which 

 are usually covered with minute scales. 



Lepidosiren (Gr. lejn^, a scale ; seiren. a siren — the generic name of the Mud- 

 eel or Siren lacertina). A genus of Dipnoous fishes^ comprising the " Mud- 

 fishes." 



Lepidostrobus (Gr. lepis, a scale ; strohilos, a fir-cone). A genus founded on 

 the cones of Lepidodendron. 



Lept^xa (Gr. Uptos, slender). A genus of Brachiopods, 



LiXGULA (Lat. lingida, a little tongue). A genus of Brachiopods. 



LYCOPODIACE.S; (Gr. hipos, a wolf; pcms, foot). Tlie group of Cryptogamic 

 plants generally known as "Club-mosses." 



ilACH^RACAXTHUS (Gr. machaim, a sabre; c.cantha, thorn or spine). An ex- 

 tinct genus of Fishes. 

 Machairodus (^Gr. iimchaira, a sabre ; odous, tooth). An extinct genus of 



C ami vera. 

 Macrotherium (Gr. makros, long; tMrion. beast). An extinct genus cf 



Edentata. 

 Macrura (Gr. makros, long; a?//'a, tail). A tribe of Decapod C'n«;'ace«?zs with 



long tails [e.g., the Lobster, Shrimp, ^c.) 

 Mammalia (Lat. 'mamma, the breast). The class of Vertebrate animals which 



suckle their young. 

 Maxdible (Lat. mandihidum, a jaw). The upper pair- of jaws in Insects ; also 



applied to one of the pairs of jaws in Crustacea and Spiders^ to the beak of 



Cephalopods, the lower jaw of A'ertebrates, ko,. 

 Mantle. The external integument of most of the Mollusca, which is largely 



developed, and forms a cloak in which the viscera are protected. Tecluii- 



cally called the '' pallium." 

 Ma^tus (Lat. the hand). The hand of the higher Vertebrates. 

 Marsipobranchh (Gr. marsijjos, a pouch; hragchia, gill). The order of 



Fishes comprising the Has-fishes and Lampreys, with pouch-like gills. 

 Marsupialia (Lat. marsupium, a pouch). An order of Mammals in wliich the 



females mostly have an abdominal pouch in which the j'oung are carried. 

 Mastodox (Gr. mastos, nipple ; odous, tooth). An extinct genus of Elephant- 

 ine Mammals. 

 Megaloxyx ^Gr. megas, great ; onux, nail). An extinct genus of Edentate 



Mammals. 

 Megalosaurus (Gr. inega^, great ; saura, lizards. A genus of Deinosaurian 



Reptiles. 

 ^Megatherium (Gr. megas^ great ; therion, beast). An extinct genus of 



Edentata. 

 Mesozoic (Gr. mesos, middle ; and zoe, life). The Secondary period in Geolog}'. 

 Microlestes (Gr. onikros, little ; lestes, thief). An extinct genus of Triassic 



Mammals. 

 Millepora (Lat. mille, one thousand ; porus, a pore). A genus of " Tabulate 



Corals." 

 Miocexe (Gr. melon, less ; kainos, new). The Middle Tertiary period. 

 Molars (Lat. mola. a mill). The " grinders" in man, or the teeth in diphyo* 



dont Mammals which are not preceded by milk-teeth. 

 Mollusc A (Lat. mollis, soft). The sub-kingdom which includes the Shell-fish 



proper, the Polyzoa, the Tunicata. and the Lamp-shells ; so called from the 



generally soft nature of their bodies. 

 MoLLUSCOiDA (Mollusai ; Gr. eid^os, form). The lower division of the Mol- 



lusca, comprising the Polyzoa. Tunicata, and Brack ioj}oda. 

 MuxoGRAPTUS (Gr. monos, single : grapho, I wTite). A genus of Graptolites. 

 Mtlodox (Gr. mulos, a mill ; odous, tooth). An extinct genus of Edentate 



Mammals. 

 Myriapoda or Myriopoda (Gr. murios, ten thousand ; podes, feet). A class 



oi Arthropoda comprising the Centipedes and their allies, characterised by 



their uimierous feet. 



