794 



MAXILLA. The second or lower pair of 

 jaws in insects, distinguished by bearing 

 feelers. 



MAXILLARY. Pertaining to the jaw. 



MAXIPALPI. The feelers of the maxillae. 



MEDIAL. Placed in the middle. 



MEDIAE. Having reference to the middle 

 line of the body. 



MEDICATED. Prepared or furnished with 

 any thing medicinal. 



MEDICAMENT. Any healing application. 



MEDIPECTORAL. Pertaining to the mid-legs 

 of insects, which are affixed to the medi- 

 pectus. 



MEDULLA OBLONGATA. The oblong me- 

 dullary column at the base of the brain, 

 from which the spinal chord or marrow is 

 continued. 



MEDULLAR. MEDULLARY. Consisting of 

 marrow. 



MELICEROUS. Consisting of matter like 

 honey. 



MELLIFEROUS. Producing honey. 



MEMBRANACEOUS. MEMBRANOUS. Com- 

 posed of delicate transparent membranes, 

 as the wings of insects : consisting of mem- 

 branes. 



MEMBRANIFORM. Having the form of a 

 membrane. 



MSNTUM. The anterior part of the gula, 

 immediately adjoining the labium. 



MEPIIITIC. Foul ; pestilential ; destructive 

 to life. 



MERETRICIOUS. Having a gaudy but de- 

 ceitful appearance. 



MERMAID. A fabulous marine animal, 

 said to resemble a woman in the upper 

 parts of the body, and a fish in the lower 

 part. 



MESOOASTRIC. The term applied to the mem- 

 brane by which the stomach is attached to 

 the abdomen. 



MKSONOTUM. The upper surface of the me- 

 sothorax, or middle part of that half of the 

 segment which covers the back. 



MESOPLEURA. The lateral surfaces of the 

 mesothorax. 



MESOPODES. The middle pair of legs. 



MESOSTERNUM. The sternum of the meso- 

 thorax, or middle part of that half of the 

 segment which covers the breast. 



MESOTHORAX. The intermediate of the 

 three segments which form the thorax of 

 an insect, bearing the posterior wings and 

 legs. 



METACARPUS. In anatomy ; the part of the 

 hand between the wrist and the fingers. 



METAMORPHOSIS. Change of form or shape; 

 as the metamorphosis of an insect from the 

 chrysalis state into a winged animal. 



METAMORPHOTIC. A term employed to 

 denote those insects which, during their 

 state of existence, undergo one or more 

 changes or transformations. 



METANOTUM. The upper surface of the 

 metathorax. 



MET APE DBS. The hind legs of insects. 



METAPLEURA. The lateral surfaces of the 

 metathorax. 



METAPODEON. The seventh segment in in- 

 sects. 



METASTEUNUM. The under surface of the 

 metathorax. 



METATIIORAX. The hindmost of the three 

 segments which form the thorax in in- 

 sects. 



METICULOUS. Very timid. 

 MICROSCOPIC. Visible only by the aid of a 



microscope ; as, a microscopic insect. 

 MIGRATE. To pass or remove from one 

 region or climate to another ; as, certain 

 species of birds migrate, in autumn to 

 a warmer climate for a temporary resi- 

 dence. 



MIGRATORY. Removing or accustomed to 

 remove from one climate to another ; as 

 migratory birds. 



MILLEPORE. A genus of ly thophy tes, of va- 

 rious forms, which have the surface perfo- 

 rated with little holes or pores, or even 

 without any apparent perforation. 



MILLEPOKITK. Fossil millepores. 



MIMIC-BEETLES. [See HISTEKIUJE.] 



MIND. An essential element in the com- 

 position of every animal. Though it can 

 neither prevent the existence, or change 

 the characters of matter, motion, or sensa- 

 tion, (the other essential elements,) it takes 

 cognizance of causes, and provides for con- 

 sequent effects, before the other elements 

 can obey its behests. " Of the connexion 

 of mind with the organs which it com- 

 mands," says Mr. Newman, " we know 

 nothing : mind itself is only known by its 

 eifects ; its commands are carried by the 

 nerves ; a fact ascertained by separating a 

 nerve ; after which separation, the mind 

 no longer controls the parts to which 

 that nerve extended its branches." [See 

 NERVES.] 



MINIATOUS. Of the Colour of red lead. 



MIOCENE. The tertiary period, in which a 

 small portion of fossil shells are of the 

 recent species. 



MONOTHALAMOUS. A term applied to the 

 shells of such Mollusca as have only one 

 chamber for the reception of the animal, 

 like that of the Whelk. 



MOLARES DENIES. The molar teeth, or 

 grinders. 



MOLARES GLANDULE. The molar glands: 

 two salivary glands situated on each side 

 of the mouth, the excretory ducts of which 

 open near the last molar tooth. 



MOLECULE. The smallest particle into 

 which a mass can be conceived or divided. 



MOLECULES. Microscopic particles. 



MOLEHILL. A little hillock or elevation 

 of earth thrown up by moles working un- 

 derground. 



MOLLUSCOUS. Pertaining to or partaking 

 of the properties of the class of animals 

 termed Mollusca, which form the primary 

 division of the Animal Kingdom. 



MOMENTUM. The quantity of motion in a 

 moving body. 



MONAD. The genus of the most minute and 

 simple microscopic animalcules, and 

 shaped like spherical cells. 



MONGREL. An animal of a mixed breed. 



MONILIFORM (antennw). Having each joint 

 oval or globose, resembling a necklace. 



MONOCULAR. Having but one eye. 



MONOCULE. An insect with only one eye. 



MONODACTYLOUS. Having one finger or toe 

 only. 



