no. 1762. 



.1 NEW FOSSIL CROCODILE— GILMORE. 



497 



Scutes. — There were no scutes found with the holotype of L. stern- 

 bergii, but in a small collection of fossils made by Mr. A. L. Beekly 

 from the Ceratops Beds (or (heir equivalent) on the Standing Rock 

 Indian Reservation, of South Dakota, were two dermal scutes 

 (Cat. No. 6545, U.S.N.M.) of a crocodilian, which correspond closely 

 in all respects to those figured by Lambe. These were associated with 

 detached teeth which can not be distinguished from those of Leidyo- 

 suchus, and the range of this genus is thus extended into South 

 Dakota. These remains were associated with a typical Ceratops 



% 



■ 



jp 



a 



Fig. 2. Leidyosuchus sternbergii. a, left humerus, ventral view; ft, right 



HUMERUS, DORSAL VIEW; C, RIGHT FIBULA, LATERAL VIEW; d, SECOND METATAR- 

 SAL OF LEFT HIND FOOT; C, PROXIMAL HALF OF A METATARSAL. ALL FIGURES 



HALF NATURAL SIZE. 



Beds fauna, the following forms having been recognized. Triccra- 

 tops, Trachodon, CTiampsosaurus, Basilemys, and Lepidosteus. 



NOTES ON A CROCODILE FROM THE KEEL CREEK BEDS OF MONTANA. 



Since the preceding pages were written a second specimen (Pis. 

 28 and 29) belonging to tliis species from the vertebrate paleonto- 

 logical collection of the American Museum of Natural History has 

 been received. It bears the catalogue number r>X ( .)X and consists of 

 the. greater portion of the cranium, lacking only the lower part of the 

 occiput, left quadrate, and posterior portions of the pterygoids. 

 The skull was collected from the Hell Creek Beds, on Gilbert Creek, 

 rroc.N.M. vol.38— 10 32 



