GLOSSARY. 57 



Geni'o-hy'o-glos'sus (prefix genio- ; hyoides os, the hyoid bone ; 

 Gr. glossa, the tongue). A muscle attached to the chin, 

 hyoid bone, and tongue. 



Geni'o-hy'oid (Gr. genus, the maxilla or cheek-bone). A mus- 

 cle passing from the hyoid bone to the symphysis of the 

 mandible. 

 Ge'nu (L. knee). The term applied to a bend in the corpus 



callosum^ and to a similar bend in the optic tract of the 



brain. 

 Gephy'rea (Gr. gephura, a bridge). A group of marine animals 



classed with the Annelida. 

 Geranomor'phae (Gr. gerdnos, a crane; morphe, form). The 



Cranes. 



Germ cell (L. germen, a bud). The cell which, after re- 

 ceiving the contents of the " sperm cell," produces the 



embryo. 

 Germa'rium (L. germen, a bud). A structure in which the 



ova are developed in some of the Turbellaria. 

 Gesta'tion (L. gero, I bear or carry). The condition of preg- 

 nancy. 



Gige'rium. The muscular stomach or gizzard of birds. 

 Gingi'vae (Latin). The gums. 

 Gin'glyform (Gr. ginglumos, a hinge). Resembling a hinge ; 



hinge-like ; applied to a joint or articulation. 

 Gin'glymus (Gr. ginglumos, a hinge). A hinge-joint which 



admits of motion only in one plane. 

 Glabel'la (L. glaber, smooth). A term for the small space 



between the eyebrows, and immediately above a line from 



one to the other. 

 Glabel'lum (L. gldber, smooth). The central raised ridge in 



the cephalic shield of the Trilobita. 

 Gladiolus (L. a little sword). A name sometimes given to the 



central portion of the sternum. 

 Gland (L. glans, an acorn). An organ in an animal or plant 



which has for its function the secretion of some material, 



(which in animals is secreted from the blood,) either 



destined for further use in the economy or for immediate 



removal from it. 

 Glan'di.la lachryma'lis infe'rior (L. little lower lachrymal 



gland). A name sometimes given to the fore-part of the 



lachrymal gland. 

 Glan'dula socia paro'tidis (If., little companion gland of the 



parotid). A process of the parotid salivary gland 



