October 24, 1919] 



SCIENCE 



395 



eluded among the cotypes on wliieli Marsli^ 

 founded the species Allosaurus medius, but in 

 1911 they were removed from the Theropoda 

 by LulP to the Ornithopoda, and with other 

 bones made the cotypes of the new species 

 Dryosaurus grandis. I had never been satis- 

 fied in my own mind that these bones per- 

 tained to a herbivorous dinosaur but it was 

 only recently that I have had the opportunity 

 of comparing them with Ornitliomimid mate- 

 rials. Through the courtesy of Mr. Walter 

 Granger, of the American Museum of Nat- 

 ui-al History, I was enabled to compare these 

 foot bones with those of the genotype of 

 Btruihomimus alius (Lambe) and other Or- 

 nithomimid foot materials from the Belly 

 River and Edmonton formations, and in 

 every instance have found such close resem- 

 blances as to leave no doubt of their Orni- 

 thomimid affinities, a view concurred in by 

 Mr. Barnum Brown, of the above institution. 



In an extended paper on the carnivorous 

 Dinosauria contained in the collections of the 

 U. S. National Museum, now in press, these 

 bones are discussed in detail and are there 

 tentatively assigned to the genus Orni- 

 ihomimus. 



The recognition of this Ornithomimid 

 dinosaur led to an investigation of the other 

 members of the Arundel fauna and the pre- 

 liminary study appears to show that there 

 are at least three other dinosaurian forms 

 having Upper Cretaceous affinities. 



The presence of dinosaurs with Upper 

 Cretaceous affinities, associated with Sauropod 

 dinosaurs (Pleuroccelus) is a combination 

 previously unknown, but whether it means 

 that the Sauropoda lived on to a much later 

 time than we had previously suspected or 

 whether we have in these dinosaurs of Upper 

 Cretaceous affinities the progenitors of the 

 Judith River (Belly River) forms, 1 shall 

 reserve judgment until a critical study of 

 the whole fauna, now in preparation, is com- 

 pleted. 



lAmer. Jour, of Sei. (III.), Vol. XXXV., 1S88, 

 p. 93. 



2 Geol. Survey of Maryland, Lower Cretaoeous, 

 1911, pp. 204-206, Pig. 7; PI. 20, Pigs. 1-4. 



The Arundel formation is regarded by the 

 most competent authorities to be Lower Cre- 

 taceous in age, and equally eminent paleon- 

 tologists have correlated the Arundel famia 

 with the Morrison fauna of the Rocky Moun- 

 tain region so that the conflicting evidence 

 of these later discoveries promises to be of 

 both paleontological and geological interest. 

 Charles W. Gilmore 



U. S. National Museum, 

 October 4, 1919 



AN ELEPHANT WITH FOUR TUSKS 



To THE Editor of Science: I have thought 

 that the accompanying note with regard to 

 the " elephant with four tusks," and its 

 illustration would be interesting for Science 

 to reproduce as an extraordinary record 

 tucked away in a rather remote publication. 



Picture and text are taken from " Sudan 

 Notes and Records," Volume 2, number 3, 

 July, 1919, page 231, and the account is there 

 printed in Arabic with the accompanying 

 translation. I am sure this will engage the 

 attention of our many mammalogists and 

 paleontologists. 



John M. Claeke 



Ou the 18th May, 1917, I went out shooting in 

 the district of Sheikh Ako Mangara, in the Markaz 

 of Yamhio, in the village of Wakila Marbo, on the 

 borders between Tembura and Yambio districts. 



I ipet a herd of elephant which I followed, 

 searching for a good one to shoot. I kept follow- 

 ing them until they stopped near a pool of water, 

 where they began to drink and throw mud on them- 



