;U4 Mr. M. A. C. Ilinton on 



longer and narrower than in tmrius, and the palate does not 

 extend quite so far backwards. Tlio parielals in thermaicus 

 liavo a posterior breadth of 13 mm. in the young and 10 mm. 

 in the old hIcuIIs ; in the young the length of each parietal 

 exceeds the lambdoid breadth by onc-foiirth, in the old by 

 one-third. In tnrcicus the posterior parietal breadth ranges 

 in adults between 11'2 and 13'2 mm., and each parietal is 

 only slightly longer than its lamb<loid breadth. The palate 

 of tUerniaicns usually does not reach and never extends behind 

 a line connecting the hinder edges of the alvooli of the last 

 molars; in turcicus the termination of the palate is always 

 distinctly behind that line. The posterior median spine of 

 the i)alate ("kriiftig 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 botje, the 

 pair being sejiarated by a small median cleft. In all other 

 respects Meliely's description of turcicus may be read as 

 applying to thermaicus. For measurements see table at 

 p. 320. 



Mandiiile. — 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. Mcliely 

 says that the coronoid process in turcicus is "ebenso sanft 

 nach hinten gekriimmt " as in iS'. ehrenhergi ; in thermaicus 

 it is more sharjjly recurved than in the latter species. 

 Mehely describes the angular process as being most closely 

 similar to that of S. m. andtolicus^ " deutlich flliigelformig und 

 vom Koiper des Unterkiofers weggespreizt " ; in thermaicus 

 the " angiilus anterior " (to use Tullberg's nomenclature) is 

 nearly obsolete, although rather more of it remains than in 

 •S. m. captorum described below ; and the tlattened "angnlus 

 posterior" lies close to the base of the alveolar process of 

 tlie incisor. The alveolar process is largely developed, the 

 alveolar length of the jaw being conspicuously greater than 

 ilie condylar length, the difference between these two dimen- 

 sions becoming more marked with advancing ;ige. 



Dentition. — lucisora : 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 which the yellow stain scons 

 chiefly to collect. The lower incisors are white or very 

 feebly and irregularly stained with yellow at all ages; thoir 

 anterior surfaces are like those of the upj)er teeth, but in two 

 cases they show more definite traces of a narrow median 



