GLOSSARY. 95 
Harmonia (Gr. armoza, I fit together)—A variety of 
suture in which the two bones are in simple 
apposition. 
Hiatus Fallopiii—A groove on the internal surface of 
the petrous portion of the temporal bone, 
which lodges the great superior petrous 
nerve. 
Homocerecal (Gr. /omozos, like; kerkos, a tail).— 
Applied to the tails of fishes when the 
caudal fin-rays are arranged symmetrically 
to the axis of the body. 
Humerus (L. the shoulder)—The bone of the arm 
from the shoulder to the elbow. 
~Hyoid (Gr. v (the letter upsilon); ezdos, shape).—A 
small bone situated between the tongue and 
the larynx. 
Hyomandibular (Gr. Zyozdes, hyoid bone ; L. mandzble, 
the lower jaw).—The cartilage or bone at 
the proximal end of the hyoidean arch. 
Hyoplastron (Gr. p/astos, moulded).—In the Chelonia 
the second lateral piece of the plastron. 
Hyostylie—A term applied to skulls in which the 
mandibular arch is supported by the hyoid 
arch, 
Hypapophysis (Gr. “ufo, under ; apophuo, 1 grow 
from).—A process on the ventral surface of 
the vertebra in some Vertebrata. 
Hypoplaston (Gr. 40, under).—In the Chelonia the 
: third lateral piece of the plastron. 
Hypotarsus (Gr. ufo, under ; zarsos, the flat of the 
