298 
EODENTIA. 
various bones, of one individual; also the inferior molar series of a second 
individual not fully adult. 
The superior molar teeth diminish in size from before backward. The 
first is the largest, the second and third are equal, and the fourth is the 
smallest. In all, the postero-external angle is right, the outer and posterior 
sides being flat, while the antero-internal angle is rounded off by the unin¬ 
terrupted curve from the front backward and outward to the internal 
enamel fold. In the stage of wear of the specimen, the external inflection 
has become isolated from the border into a narrow fossette, which is strongly 
curved posteriorly. In all of the teeth, there is a single narrow fossette 
behind it. There is a narrow transverse fossette at the anterior part of the 
crown closely adjoining, or, in the second and third molars, continuous with 
the internal enamel inflection. The worn surface of the crown of the first 
molar is nearly twice the extent of that of the fourth. Its shaft is curved 
moderately inward and backward. 
The inferior molars present the same relations of size as the superior. 
Tlie first is half as long again antero-posteriorly as any of the others, while 
the second and third are equal. The inner enamel inflection overlaps the 
external in front of it, and is preceded in all the crowns by one transverse 
fossette, except in the last, where there are two. These fossettes become 
smaller on attrition ; that of the first molar is a crescent with the horns for¬ 
ward. There is, one transverse fossette behind the external inflection. In 
form, the inferior molars are less triangular than the superior; the first and 
last differ from the others in presenting a strong antero-internal angle. 
The mandibular ramus is robust, and the coronoid process originates 
opposite the line of contact of the second and third inferior molars. Tlie 
diastema is abruptly concave, and the mental foramen is below its fundus. 
The inferior border below the molars is nearly straight. The molars ter¬ 
minate in short roots at the base of the long prismatic croAvn. The inferior 
incisor is almost quadrate in section, the two posterior angles being rounded. 
The enamel does not extend on either side, and is smooth; its transverse 
section is slightly convex. The surface of the dentine is polished, and is 
marked with faint, transverse, undulating lines. The transverse maxillo- 
jjalatine suture is opposite the posterior part of the second superior molar; it 
