GLOSSARY. 379 



Applied to the strata which contain the remains of animals and plants, to which 



remains Geologists now restrict the term Fossil. 

 FucivoROUs. (Lat. /Mc«i-, sea- weed ; and voro, I devour.) Animals which subsist 



on sea- weed. 

 FusiroivM. (Lat. /«SMs, a spindle ; and /orma, a shape. ) Spindle-shaped. 



Ganglion. (Gr. ganglion, a knot.) A mass of nervous matter, forming a centre 



from which nervous fibres radiate. 

 Gasteropoda. (Gr. gaster, stomach; pons, a foot.) That class of molluscous 



animals which have the locomotive organ attached to the under part of the body. 

 Ge.mmiparous. (Jl^at. gemma, a bud ; pario, I bring forth.) Propagation by the 



growth of the young, like a bud from the parent. 

 Gemmule. (Dim. o{ gemma.} The embryos of the radiated animals at that stage 



when they resemble ciliated monads. 

 Globose. (Lat. globus, a globe.) Globe-shaped. 

 Glossology. (Gr. glosse, the tongue; Gr. logos, discourse.) The science of 



scientific language. 

 Granules. (Dim. of ^rawwm, a grain.) Little grains. 

 Gynglymoid. (Gr. gigglumos, a hinge.) A joint formed for motion on one plane. 



Haustellate. (Lat. haurio, I drink.) The structure of mouth adapted for 

 drinking or pumping up liquids ; also the insects which possess that kind of 

 mouth. 

 Helbiinthoid. (Gr. helmhis, an intestinal worm.) Worm-shaped. 

 Hemelytra. (Gr. hemisu, half; elytron, a sheath.) A wing, of which one half is 



opaque and firm like an elytrum. 

 Hemiptera. (Gr. hemisu, half; pteron, a wing.) The order of insects in which 



the anterior wings are hemilytra. 

 Hepatic. (Lat. hepar, liver.) Belonging to the liver. 

 Herbivorous. (Lat. herhu, grass; voro, I devour.) The animals which subsist on 



grass. 

 Hermaphrodite. (i7ermes, Mercury ; /iphrodita, Venus.) An individual in which 



male and female characteristics are combined. 

 Heterogangliate. (Gr. heteros, diverse ; gagglion.) The animals with the gan- 

 glionic nervous system, and the ganglions scattered often unsymmetrically.; 

 Heteromorphous. (Gr. heterns, another; morphe, form.) Of an irregular or 

 unusual form, applied to the larva; of certain insects which differ in form from 

 the imago, and applicable to the true larval state of all insects. 

 Hexapod. (Gr. hexa, six ; potis, a foot.) The animals with six legs, such as true 



insects. 

 Histological. (Gr. hi&tos, a tissue; logos, discourse.) The doctrine of the tissues 



which enter into the formation of an animal and its difTerent organs. 

 Homogangliate. (Gr. homos, like; ganglion.) The animals with the ganglionic 



nervous system and symmetrical arrangement of the ganglions. 

 Homologue. (Gr. homos ; logos, speecli.) The same organ in different animals 



under every variety of form and function. 

 HoMOJioRPHOus. (Gr. /iomo«, like ; 7no;7jAe, form. ) Of similar form. 

 Homoptera. (Gr. homos, like; pteron, a wing.) The insects in which the four 

 wings have a similar structure, but restricted in its application, to a section of 

 Hemiptera. 

 Hyaline. (Gr. hualos, crystal.) The pellucid substance which determines the 



spontaneous fission of cells. 

 Hydatid. (Gr. hudalis, a vesicle.) A bladder of albuminous membrane, con- 

 taining serous fluid ; generally detached ; sometimes with an organised head 

 and neck. 

 Hydra. ( Gr. hudra, a water -serpent.) The modern generic name of freshwater 



Polypes. 

 Hydriform. Similarly-formed Polypes. 

 Hydrozoa. (Gr. hudra; zoo/?, animal.) The class of Polypi organised like the 



Hydra. 

 Hymenoptera. (Gr. humen, a membrane ; pteron, a wing.) The order of insects 

 including the bee, wasp, &c. which have four membranous wings. 



