1902.] Osborn^ American Eocene Primates. 213 



coinciding in measurements and description, although the 

 crucial tooth, p^, is wanting. 



(Sp. 19) Microsyops (Bathrodon) axinectens Mar^/j. — Type, 

 Yale Museum. This corresponds with the large specimens at 

 the Princeton Museum (Fig. 40), but the paraconid is less 

 elevated; the trigonid is narrow and the talonid broad, with 

 three distinct cusps. The Princeton specimens have a deep 

 jaw, with an unusually large procumbent incisor ; the canine has 

 a long single fang; pg is possibly represented by a rudimentary 

 socket; the trigonid narrow and slightly elevated; the para- 

 conid more or less distinct on mj-mg; hypoconulid faint on 

 nij, nig, strong on nig. The upper molars, which are pro- 

 visionally associated with this species, bear a low, external, 

 intermediate cusp or mesostyle, minute conules, and a low 

 cingule representing a hypocone. 



BIBLIOGRAPHY. 



(The references to the descriptions of the types will be found in the 

 table, pp. 172-175.) 



1884. Cope, E. D. Tertiary Vertebrata. 4to. Washington, 1884. 



1897. Earle, Charles. On the Affinities of Tarsius: A Contribu- 

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 ist, Vol. XXXI, No. 367, July, 1897, pp. 569-575; ibid., 

 August, 1897, pp. 680-689. 



1896. Leche, W. Untersuchungen ueber das Zahnsystem lebender 



und fossiler Halbaffen. Festschrift fiir Carl Gegenhaur, pp. 

 128-166, Leipzig, 1896. 

 1901. Major, C. I. Forsyth. On Some Characters of the Skull in 

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1897. Matthew, W. D. A Revision of the Puerco Fauna. Bull. 



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 1895. OsBORN, Henry F., and Charles Earle. Fossil Mammals of 



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Nat. Hist., Vol. VII, Art. i, March 8, 1895, pp. 1-70. 

 1892. Osborn, Henry F., and J. L. Wortman. Fossil Mammals of 



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Bull. Amer. Mus. Nat. Hist., Vol. IV, No. i. Art. xi, Oct. 20, 



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