86 GLOSSARY. 
Basihyal (L. daszs, the base ; yordes, hyoid bone).— 
An ossification of the hyoidean arch in 
certain fishes; represented in man by the 
body of the hyoid bone. 
Basioccipital (L. daszs, the base ; occzput, the back of 
the head).—A bone of the skull ; represented 
in man by the basilar process of the occipital 
bone. 
Basipterygoid (Gr. daszs, a pedestal; plerygion, a 
wing).—A bone of the skull ; represented in 
man by the pterygoid plates. 
Basisphenoid (Gr. Jaszs, a pedestal ; sphen, a wedge).— 
A bone of the skull ; represented in man by 
thes posterior portion, of the body -of the 
sphenoid bone. 
Basitemporal (Gr. daszs, a pedestal ; L. ¢empora, the 
temples).—One of the bones of the skull. 
Basis cranii,—The base or floor of the skull. 
Bicuspid (L. dzs, twice ; cuspzs, a point).—Having 
two points or fangs, as the bicuspid teeth. 
Brachium (L. the fore-arm).—The upper arm, that 
portion which articulates with the scapula 
and extends to the elbow. 
Bulla (L. dud/a, a bubble).—The osseus wall surround- 
ing the tympanum in some Vertebrata. 
Caleaneum (L. ca/r, the heel).—The os calcis of the 
tarsus, in man forming the heel. It corres- 
ponds to the fibulare and perhaps the fibular 
sesamoid bone of the morphologist. 
Calear (L. a spur)—The “spur” of some birds. 
