BU^OTHERIA. 
81 
At the time of the discovery of Anaptomorplms^ Prof. 0. C. Marsli 
expressed tlie opinion f that some of tlie forms noticed by him in the 
Bridger formation of Wyoming are allied to the Lemurs. He, however, 
did not state the characters which led him to entertain this opinion, nor did 
he give such descriptions as would enable the anatomist to judge of its 
correctness. Up to the present date (May, 1876), no more complete account 
of these animals has appeared. 
In the Actes of the Linnman Society of Bordeaux for 1873,* M. Del- 
fortrie published a description of the cranium of a Mammal which he named 
Palceolemur hetUlei, which he referred to the Lemurs, pointing out certain 
differences. He gave a number of characters which he deemed sufficient 
reasons for such a course. Chief among these are the completed orbits, 
directed partially forward, which are associated with elongate nasal bones, 
large petrous bone, and acutely tubercular molars. M. Delfortrie also 
points out that the dentition differs from that of the known Lemuridce in the 
more numerous premolars, giving the following formula: I. U2; C. 1; 
P. M. 4; M. 3 ; or the same as that of Toinitlierium. 
The history of discovery of the European forms of this group is 
similar to that of our own, in respect to the difficulty at first experienced 
by paleontologists in referring them to their proper systematic position. 
The investigations conducted by Cuvier, during the early part of this 
century, into the extinct Vertebrata of the Eocene of the neighborhood of 
Paris, revealed, among other types, the genus Hc/tyns (Cuv.). This he referred 
to the Ungulates, and to the neighborhood of Amplotlierium. Laurillard and 
Blainville believed that its affinities are to the Insectivora. The above-men- 
tioned discovery by M. Delfortrie, of Bordeaux, of the greater part of the 
cranium, at Bebuer (Dej^artment of Lot), of his PalmoJeniurhetUleiA^Q^ him to 
announce that Lemurs inhabited France during early Tertiary times. This 
was in confirmation of the opinion of M. Eiitimeyer, who had already 
described a CcenopitJiecus lemuroides from the Eocene of Switzerland. . But 
M.M. Gaudry and Gervais, on further investigation, came to the conclusion 
* The separate copies of this paper are dated May 25, 187o, while a supplement 
attached to the last page is dated September 4, 1873. 
t Amer. Jour. Sci. and Arts, Oct. 8, 1872. 
|Actes de la Societe Liuueeune de Bordeaux, xxix, 1873. 
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