654 



REPORT OF STATE GEOLOGIST. 



GLOSSARY. 



Arboreal, tree dwelling. 



AuDiTAL BULLA, the Swelling of the tympanic bone just within the meatus 



of the ear. 

 Bifid, divided into two parts. 



Calcab, the bone extending from the tarsus along the posterior edge of 



the interfemoral membrane of bats. 

 Canines, the tearing teeth or "eye teeth" of mammals, absent in the order 



GUres and some others. 

 Congener, belonging to the same genus. 



Cusp, in mammals, the projections on the crowns of the teeth. 

 Dimorphic, having two forms differing greatly in color and appearance^ 



within the same species; e.g.. black and gray squirrels. 

 Dorsal, the back as opposed to the belly. 



Ear, measurements of the ear are taken from the point where it joins the 



crown of the head on the inner side. 

 FossoRiAL, burrowing. 

 Hastate, spear shaped. 



Hind foot, measurements of the hind foot as used in this paper are from 

 the dorsal side of the heel joint to the tip of the longest claw. (See 

 Fig. 1.) 



Incisors, the front teeth (see Figs. 2 and 3). 

 I NTERORBiTAL, the rcgiou between the eyes. 

 Mamm^, the teats. 



Molars, the teeth which come into the jaw behind the region of the milk 

 teeth. 



OsTEOLOGicAL, pertaining to the skeleton. 

 Pelage, the hair or fur. 



Plantigrade, with the entire sole of the foot, from toes to heels, applied to 



the ground in walking. 

 PosTORBiTAL, behind the region of the eyes. 



Premolars, the teeth in the sides of the jaw between the canines and the 



molars; they replace the milk teeth of the jaw. 

 Retractile, capable of being drawn back, as the claws of a cat which are 



not exposed when the animal is at rest. 

 Rostrum, the anterior part of the skull, made up of the nasal and part of 



the premaxillary and maxillary bones. 

 Sagittal crest, a sharp ridge along the middle dorsal region of some skulls. 



(See Fig. 2.) 



Tail, measurements of the tail are taken from the point of its junction 

 with the trunk, to the end of the bony part, not to the end of the hairs. 

 (See Fig. 1.) 



Total Length, measurements from the tij) of the nose to the end of the 



tail vertebrae. (See Fig. 1.) 

 Tragus, a slender detached lobe in the ears of bats. (See Fig. 25.) 

 Tubercle, one of the cusps or prominences on the crowns of the teeth. 

 Ventral, the lower or belly side of an animal. 



Zygomatic arch, the slender arch of bone which forms the lower part of 

 the orbit of the eye. (See Figs. 2 and X) 



