GLOSSARY, 113 
bone on the outer side of the scapula. 
Developed in some birds. 
Schindylesis (Gr. schindulzo, 1 split)—A variety of 
suture where one bone fits into a groove in 
another. 
Sella turcica.—The depression on the superior sur- 
face of the basi-sphenoid which lodges the 
pituitary body. 
Sensory canal bones.—Applied to a series of ossifi- 
cations which protect and convey the sensory 
canals in certain fishes. 
Sesamoid (Gr. sesamon, a kind of small grain; ezdos, 
shape).—Applied to small bones formed in 
tendons. 
Sinciput (the fore part of the head).—The fore part of 
the head or skull. 
Sphenethmoid (Gr. sphen, a wedge ; ethos, a sieve ; 
etdos, shape).—A bone of the skull in some 
Vertebrata, anterior to the parasphenoid. 
Spheno-palatine foramen.—A foramen formed by 
the palatine and sphenoid bones. 
Sphenoid (Gr. sphen, a wedge ; ezdos, shape)—A bone 
of the skull which wedges in and locks 
together other bones. 
Spinous (L. sfzza, a thorn)—Applied to any spine- 
like process of a bone). 
Splenial (L. sp/enzuwm, a splint)—A bone of the skull 
in certain Vertebrata. 
Squamosal (L. sguama, a scale).—A bone of the skull 
in lower Vertebrata, represented in human 
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