314 Mr. M. A. C. FElinton on 
longer and narrower than in turcicus, and the palate does not 
extend quite so far backwards. The parietals in thermaicus 
have a posterior breadth of 13 mm. in the young and 10 mm. 
in the old skulls ; in the young the length of each parietal 
exceeds the lambdoid breadth by one-fourth, in the old by 
one-third. In tureicus the posterior parietal breadth ranges 
in adults between 11:2 and 13:2 mm., and each parietal is 
only slightly longer than its lambdoid breadth. The palate 
of thermatcus usually does not reach and never extends behind 
a line connecting the hinder edges of the alveoli of the last 
molars; in tureicus the termination of the palate is always 
distinctly behind that line. The posterior median spine of 
the palate (‘‘kriftig entwickelt” in young turcicus, reduced 
to a “‘ stumpfe Ecke” in adults) is represented at all ages in 
thermaicus by a minute process of each palatine bone, the 
_ pair being separated by a small median cleft. In all other 
respects Méhely’s description of tureitcws may be read as 
applying to thermaicus. For measurements see table at 
. 320. 
é Mandible.—The lower jaw of thermaicus differs from that 
of turcicus in having the coronoid process more strongly re- 
curved and the angular process a little more reduced. Méhely 
says that the coronoid process in turcicus is “ebenso sanft 
nach hinten gekriimmt” as in S. ehrenbergt ; in thermaicus 
it is more sharply recurved than in the latter species. 
Méhely describes the angular process as being most closely 
similar to that of S.m. anatolicus, “ deutlich fligelformig und 
vom Kérper des Unterkiefers weggespreizt” ; in thermaicus 
the “angulus anterior” (to use Tullberg’s nomenclature) is 
nearly obsolete, although rather more of it remains than in 
S.m. captorum described below ; and the flattened “ angulus 
posterior ’’ lies close to the base of the alveolar process of 
the incisor. The alveolar process is largely developed, the 
alveolar length of the jaw being conspicuously greater than 
the condylar length, the difference between these two dimen- 
sions becoming more marked with advancing age. 
Dentition—Incisors: the upper incisors have the enamel 
faintly tinged with yellow in young specimens, but the 
staining becomes more intense with age. The anterior sur- 
face shows in certain lights a very faint trace of a median 
longitudinal concavity, in whieh the yellow stain seems 
chiefly to collect. The lower incisors are white or very 
feebly and irregularly stained with yellow at all ages; their 
anterior surfaces are like those of the upper teeth, but in two 
cases they show more definite traces of a narrow mediaa 
