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Show 1893.] DR. C. J. FORSVTH MAJOR ON A LEMUROID SKULL. 533 ring of the orbit was complete. By the fact of the orbital and temporal fossae communicating freely under the postorbital bar, it is shown that we have not here to do with a member of the Anthropoidea. Unusual for a Lemuroid is the very strong postorbital constriction of the frontals, and the globose form of the very broad and elevated cranial portion. A s to the first character, however, w e meet with it in the Tertiary Adapis (A. parisiensis, Cuv., and A. magnus, Filh.), and to a much less degree in the existing African Otogale and Malagasy Hapalemur 1. Fig. 1. Skull of fossil Lemuroid. Upper view, two-thirds nat. size. It is with this last genus of the subfamily Lemurince that there appear to be the most affinities. And first of all in the voluminous cranial portion, the fossil being proportionally broader still than Hapalemur simus. This last has a very short facial portion ; from the aspect of the side view it appears that in the Malagasy fossil the anterior portion of the frontals slopes clown abruptly, still more so than in Hapalemur. This is indicative of a small facial cranium in the former too ; though it m a y partly be a juvenile character, as the distinctness of all the sutures and the aspect of the bones show the fossil to be a somewhat young specimen, in which part of the milk-dentition m a y have been present. The upper profile of Hapal. simus, as seen in the side view, is more rounded off posteriorly, the sloping down towards the occiput beginning anteriorly to a line which would unite the anterioi 1 F. A. Jentink, " On some rare and interesting Mammals " (' Notes from the Leyden Museum,' note vii. 1885, pi. i. fig. 1, Hapalemur simus, Gray). PROC ZOOL. Soc-1893, No. XXXVI. 36 |