GLOSSARY. 



223 



the back means the upper convex 



sui'face. 

 Potted, punctured like a thimble. 

 Duplicated, divided into plaits or 



folds. 

 Duplicatm-e, a fold, any thing 



doubled. 



Echinated, bristled like a hedge- 

 hos:, set ^vith spines. 



Effuse, spread out. 



Elliptical, having the form of an 

 ellipsis. 



Elongated, lengthened, drawn out. 



Emarginate, i Avith the margin or 



Emarginated.j edge notched. 



Ensiform, sabre-shaped. 



Entire, whole, uninterrupted, not 

 divided. 



Epidermis, the outer coating or 

 scarf sldn of the shell. 



Equidistant, being at the same dis- 

 tance. 



Equilatei-al, having all sides alike. 



Equivalve, having both valves of 

 equal dimensions. 



Exolete, worn or faded. 



Exserted, standing out, protruding. 



Extraneous, not essentially or na- 

 turally forming part of an object. 



F. 



Falcated, bent or hooked like a 



scythe. 

 Fascia, a coloured band. 

 Fasciated, filleted, or covered with 



bands. 

 Fascicled, clustered together as in 



a bundle. 

 Fasciculated, consisting of little 



bundles. 

 Fastigiate, flat and even at top. 

 Faux, w'hat can be seen of the 



cavity of the first chamber of 



the shell, by looking in the aper- 



tui-e. 

 Ferruginous, of an iron colour, or 



rust coloured. 

 Filar.ient, a slender thread-like 



process. 

 FUiform, thread-shaped, slender 



and of equal thickness. 

 Fimbriated, fringed. 

 Fissure, a cleft, a little slit, or nar- 

 row chasm. 

 Flexuous, zigzag, with angles gently 



winding. 

 Flexure, a bending. 



Fluviatile, of or belonging to rivers, 

 or to fresh w'ater. 



Foliaceous, consisting of laminaj 

 or leaves. 



Foliated, bent into lamina) or 

 leaves. 



Fornix, the excavated part under 

 the umbo. It likewise signifies 

 the upper, or convex shell in the 

 Ostrea. 



Fragile, brittle, easily broken. 



Front, in univalves, when the aper- 

 ture is turned towards the ob- 

 server. 



Fiu'cated, forked. 



FmTow, a small trench or hollow. 



Fuscated, darkened, obsctu-ed. 



Fusiform, spindle-shaped, inter- 

 mediate between the conical and 

 oval. 



G. 



Gap, or gape, an opening in bi- 

 valves \vhen the valves are shut, 

 a^ in the Fholadcs, Myai, &c.. 



Gaping, opening widely. 



Geminated, marked with a double 

 elevated stria connecting the 

 wreathes. 



Geniculate, keeled. 



Genus, an assemblage of species 

 possessing certain characters in 

 common, by which they are dis- 

 tinguished from all others. 



Genera, the plural of genus. 



Gibbous, bulged or bulging. 



Glabrous, smooth, having a smooth 

 surface. 



Globose, globular. 



Granulated,beaded, in small grains 

 or beads. 



Groove, a hollow channel. 



H. 



Hemispherical, in the shape of a 

 half globe. 



Hirsute, rough, beset with strong 

 hairs. 



Heteroclitieal, synonjTnous \^ith 

 hcterostroi>he. 



Ileteriistriiphe, reverseil, applied to 

 shells whose sjiires tui'n in a con- 

 trary direction to the usual way. 



Hisxjid, with stiff hairs. 



I & J. 



Jagged,denticulated,uneven,tooth- 

 ed like a saw. 



