GLOSSARY. 113 



each side from the cerebellum to the corpora quadrigemina 



and optic thalami. 

 Proces'sus a cerebel'lo adtes'tes (L. process from the cerebellum 



to the testes). A process connecting the cerebellum with 



the corpora quadrigemina. 



Proces'sus arcifor'mis (L. bow-shaped process). A set of super- 

 ficial white fibres which cross the medulla oblongata below 



the olivary bodies. 

 Proces'sus bre'vis vel obtu'sus (L. short or obtuse process). A 



short process on the malleus (hammer-bone) of the 



tympanum of the ear. 

 Proces'sus cochlearifor'mis (L. spoon-shaped process). A thin 



lamina of bone above the Eustachian canal in the petrous 



portion of the temporal bone. 

 Proces'sus cunea'tus (L. wedge-shaped process). A term applied 



to the anterior (upper) part of the posterior column of the 



spinal cord, where it passes into the medulla oblongata. 

 Proces'sus gra'cilis (L. slender process). The long process of 



the malleus (hammer-bone) of the tympanum of the ear. 

 Proces'sus lenticula'ris (L. lentil-shaped process). The tubercle 



by which the incus of the tympanum of the ear articulates 



with the stapes ; called also os orbiculare. 

 Proces'sus vagina'lis peritone'i (L. ensheathing process of the 



peritoneum). A pouch of peritoneum which in foetal life 



passes into the scrotum, and receives the testicle in its 



descent. 

 Procce'lus (Gr. pro, before ; koilos, hollow). A term applied 



to those vertebrae which have their centra concave in front. 

 Proctu'cha (Gr. proktos, the seat or anus). A group of the 



Turbellaria in which the digestive canal is provided with 



an anal aperture. 

 Procyo'nidae (Gr. pro, before, above ; kuon, a dog). A division 



of the Carnivora. 

 Produc'tidaB (L. produce, I prolong). A family of extinct 



Brachiopoda. 

 Pro-em'bryo (Gv.pro, previous to; embruon, an embryo). A 



cellular structure produced from the spore of some plants, 



and from which the embryo arises. 

 Profun'da (L. profundus, deep). Applied to certain deep 



arteries of the arm, penis, and thigh. 



Proglot'tis (Gr. pro, before ; glottis, the opening into the wind- 

 pipe). The term applied to the detached segments of the 



body in the Cestoidca. 



