GLOSSARY. 141 



CUSPS, the prominences on the upper surface of a tooth. 



DENTARY, the bone in the lower jaw which carries the teeth. 



DENTINAL, pertaining to dentine. 



DERMAL, pertaining to the skin. 



DEXTRAL, from right to left. 



DIAPHRAGM, the midriff, the muscular partition between the 



thorax and the abdomen. 



DIAPOPHYSIS, the upper transverse process of a vertebra. 

 DIASTEMA, the interval between a series of teeth, as in the jaw of 



the cattle and deer. 



DIGITIGRADE, walking on the tips of the toes. 

 DIGITS, the fingers or toes. 

 DIPHYODONT, having the permanent teeth preceded by a set of 



milk teeth. 



DISTAL, furthest from the body. 

 DIURNAL, pertaining to daylight. 

 DORSAL, pertaining to the back. 



DORSO-LUMBAR, pertaining to the back and loins taken together. 

 DUODENUM, the first portion of the small intestines. 

 EARLET, the tragus or subsidiary ear-conch, distinctive of some 



of the bats. 



ENDOSTEAL, beginning within the substance of the cartilage. 

 ENSIFORM, shaped like a sword. 



EPICORACOID, the inner prolongation of the coracoid. 

 EPIDERMAL, pertaining to the outer skin. 

 EPIGASTRIC, pertaining to the upper part of the abdomen. 

 EPIHYALS, the bones in the tongue and neck connecting the 



ceratohyals with the stylohyals. 

 EPIOTIC, the upper bone or cartilage encasing the organ of 



hearing. 

 EPIPHYSIS, a separate cartilaginous process eventually ossified 



into an adjoining expanse of bone. 

 EPISTERNUM, another name for the omosternum, the piece of 



cartilage at the inner end of the clavicle. 

 EPISTROPHEUS, another name for the axis, otherwise the second 



of the neck vertebrae. 



ETHMO-TURBINAL, the front bone of the nasal cavity. 

 ETHMOID, the sieve-like bone at the root of the nose. 

 EXOCCIPITALS, the bones in the skull on each side of the basi- 



occipitals. 



FABELL-^E, small bones lying behind the condyles of the femur. 

 FACET, a flat surface with a definite boundary. 

 FALCIFORM, the radial sesamoid bone of the wrist lying outside 



the line of the first digit. 

 FANGS, the poison teeth of the snakes. 



FAUNA, the animals found within any particular district or area. 

 FIBULA, the smaller of the two bones in the leg below the knee, 



corresponding to the ulna in the arm. 

 FIBULARE, the calcaneum or heel-bone. 

 FLESH TEETH, the last upper premolar and the first lower 



molar, as modified for flesh-eating in the carnivores, 

 FLUKES, the two blades of the tail in cetaceans, 

 FQNTANELLE, a gap or vacancy. 



