1901.] 



LEMUR MONGOZ AND L. EUBBIVEKTEB. 



257 



characteristic feature to the skull of Zmnr moyujoz, are so peculiar 

 ia this and the following species {Lemur nibriventer) that, m order 

 to understand them, some general considerations must precede 

 their description. 



Text-fig. 63. 



Left orbital region of Lepidolemur mustelinus, | nat. suze, 

 (Letters as in text-fig. 61.) 



Text-fig. 64. 



Lepidolemur mustelinus. 



Same specimen as fig. 63. The bones forming the roof of the sinus have 



been removed, in order to exhibit its floor. 



mt.=h&^-A plate of maxiUo-turbinal ; other letters as in text-fig. 61. 



It has been stated that in the "Common Lemur "—whereby I 

 take the genus Lemu^r to be implied— " the os planum ot the 

 ethmo-turbinal does not enter into the inner wall of the orbit but 

 is shut out from it by the maxilla, as in most inferior Mammals _ . 



At this Society's meeting on February 19th, I showed that in 



1 W H. Flower, An Introduction to the Osteology of the Mammalia, 

 3rd ed.', p. 166 (1885). 



