Lemurs of the Hapalenuu- Group. 



349 



Teeth of 11, schlegeli shorter and narrower. 



The typical skull of H. schlegeli has fully erupted and 

 cornj.'lete dentition and the sutures nearly obliterated. The 

 obliteration, however, has not extended to quite the same 

 extent as in the skull referred to //. olivaceus. Nor is there 

 in the skull of //. schlegeli a median sagittal ridge on the 

 parietal region. Tlie low temporal crests are merely con- 

 fluent near the middle of the parietals. The difference in this 

 respect may be due to difference of age ; but this is uncertain. 

 AVhen the two skulls are placed side by side on a flat surface 

 they are practically the same height, despite the considerable 

 disparity in length. 



The differences in the shape and the dimensions of various 

 parts of the skulls may be appreciated fiom the subjoined 

 table of measurements of the type of schlegeli ii\id of my skull 

 referred to olivaceus. In the third column are given the 

 dimensions taken from the figures of the skull named griseus 

 by M.-Edwards : — 



Skulls assigned to H. griseus have also been figured by 

 Jentink (Notes Leyden Mus. vii. pis. i. & ii. figs. 3-4^ 1885) 

 and by van der Hoeven (Tijds. Nat. Geschied. 1844, pi. i. 

 fig. 1) ; but in both cases there are discrepancies in the 

 dimensions of the superior and lateral views which make it 

 impossible to tabulate the measurements. For instance, in 

 the case of Jentiuk's specimen the superior view of the skull is 

 65 mm., the lateral view 62*5, whereas the lateral view of the 

 mandible from the condyle is 44 and the superior view 40. 



