TITLES AND ABSTRACTS OF PAPERS 213 



on the horns, alone, and yet there is little doubt but that Bison latifrons, with 

 a spread of 6 feet and more, is distinct specifically from the modern animal, 

 with short, inward curving horns, and it is quite impossible to assemble the 

 intermediate forms in less than four or five harmonious groups. A recent 

 discovery by Doctor Hay of the undoubted remains of Bison in association 

 with those of Camclus marks the earliest known specimen in the Western 

 Hemisphere. 



FIRST RECORDED AMPHIBIAN FROM THE TERTIARY OF NEBRASKA 

 BY HAROLD J. COOK^ 



{Ahstract) 



Something over a year ago the writer was examining the dump of a series 

 of excavations made in the Lower Pliocene Snake Creek beds by a party from 

 an institution, and among other interesting things picked up what was clearly 

 a portion of a jaw, of peculiar type. Both ends bore evidence of being freshly 

 broken off, and so a careful search of the surface immediately surrounding 

 was made, but without success. 



The part secured was sent to Doctor Matthew for examination and compari- 

 sons, and apparently this specimen pertains to the group of giant salamanders 

 not previously reported from the American Tertiary. Its closest known rela- 

 tive is the famous Oenigen fossil, now known as Andrias schcuchzeri, from the 

 Upper Miocene of Switzerland. The present specimen greatly exceeds that 

 form in size and was probably at least 5 feet in length, if we may judge from 

 the size of the jaw. It is evidently a distinct form, for which the name 

 PUcagnathus matthcwi is proposed. The generic name is in reference to the 

 folded appearance of the internal surface of the lower jaw and the specific 

 name as a tribute to Dr. W. D. Matthew. Detailed descriptions and figures 

 will shortly appear. The part preserved is 61 mm. long, 22 mm. deep, and 

 12 mm. in greatest transverse diameter. 



Professor Loomis mentioned another in his possession ; these two are prob- 

 ably the only known specimens. 



LABYRINTHODONT FROM THE NEWARK SERIES 

 BY W. ,T. SINCLAIR 



(Ahstract) 



The author exhibited the lower jaw of a gigantic Stegocephalian from the 

 Brunswick horizon of the Newark of New Jersey and discussed its affinities. 



Professor Lull, speaking from his experience and interest in the Triassic of 

 the Connecticut Valley, emphasized the importance of anything which adds to 

 our knowledge of the rery meager fauna of the Newark series and called at- 

 tention to the marked difference of the older Newark fauna from the Dinosaur 

 fauna found in the upper beds. 



1 Presented by W. D. Matthew. 



