VERTEBRATE PALEONTOLOGY IN 1913 635 



theless, I am inclined to think some of them pertain to the new 

 genus. The femur lacks a third trochanter. 



In a paper published in vol. xxii. (pp. 407-20) of the Bulletin 

 of the American Museum of Natural History Prof. H. F. Osborn 

 makes a further contribution to his favourite study of the 

 skulls of the horned ungulates of the families Uintathcriidoc, 

 and Titanotheriidce, dealing in this instance with species from the 

 Wind River Lower Eocene of Wyoming. A very interesting point 

 is that in the members of the family Uintatheriida: characteristic 

 of this stage, such as Bathyopsis, the skull lacks the great bony 

 horn-cores of the later types, their place being taken by small 

 insignificant bony knobs. In the perissodactyle family 

 Titanotheriidce it has been found that two phyla of the genus 

 Eotitanops are recognisable, one comprising relatively small, 

 persistently primitive light-limbed species, and the other animals 

 of a larger and more progressive type. Several new species 

 are named in the course of the article. 



From the point of view of geographical distribution special 

 interest attaches to the description by Mr. E. de L. Niezabitowski 

 {Bull. Ac. Sci. Cracovie, 1913, pp. 223-5) of P art of the skull of 

 a rhinoceros from the Tertiary of Odessa, which is referred to 

 the extinct American genus Teleoceras, under the name of T. 

 ponticus. It is one more instance of the affinity between the 

 Tertiary faunas of Eastern Europe and North America. 



A Pleistocene rhinoceros from the Lower Rhine in the 

 neighbourhood of Mosbach has been made the type of a new 

 race by Dr. Hans Pohlig (Bull. Soc. beige Geol. vol. xxvii. Proc- 

 Verb. p. 145), under the name of Rhinoceros mercki mosbachensis, 

 Falconer's R. etruscus being also regarded as a race of the same 

 species. 



North American Tertiary horses belonging to the modern 

 genus Equus form the subject of a paper by Dr. Hay, published 

 in the Proceedings of the U.S. National Museum, vol. xliv. pp. 

 569-94. Four species are described as new, two of these being 

 based on teeth alone, while each of the other two is represented 

 by the skull. As this paper is very technical, and therefore of 

 interest only to specialists, fuller notice would be out of place 

 on the present occasion, but the following passage in reference 

 to the difficulties incidental to the study of fossil horses may be 

 quoted : 



" It may be perfectly obvious that two species are 



