192 PROCEEDINGS OF THE ACADEMY OF 



was preserved complete in the Mus. Comp. Zoology, Cambridge. (See Allen, 

 Mammals Massachusetts.) He said that the muzzle of the female was longer 

 than represented for European specimens, but that that of the male was as 

 short, and that no difference conld be detected in the skeleton of either. He 

 therefore retained the name of//. bide?is. He stated that Mesoplodon soiverbien- 

 tis also occurred on the coast of Nantucket. 



He next exhibited the left ramus of the mandible of a finner whale, from the 

 miocene of Edgecombe Co., North Carolina. He pointed out that its charac- 

 ters were nearest those of the Eschrichtius ccphalus, but that there was a groove 

 inside the upper edge of the jaw, that the nutritious foramina were much more 

 numerous, etc., etc. He called it Eschrichtius polyporits. 



He exhibited a number of remains of fossil reptiles, from Sampson Co., North 

 Carolina, of cretaceous age, which were intrusive in miocene beds. Among 

 these were humerus, tibia, fibula, metatarsus, caudal vertebra, and perhaps 

 cervical vertebrae and ungueal phalange of a Dinosaur, discovered together by 

 Prof. W. C. Kerr, Director of the Geological Survey of North Carolina. The 

 remains indicated a species having the same general form and size as the Ha- 

 drosaiirus foulkei. The caudal vertebra was of very different form, and resem- 

 bled more that of Bi/!ceosaurus, minus the diapophyses. This vertebra was 

 elongate, depressed and ahgulate. The animal presented various other points 

 distinguishing it from Iladrosaurus, and was named Hypsibema crassicanda. 



Two caudal vertebrae of another animal from the same County, but different 

 locality, indicated a true Hndrosaurus. One, near the thirtieth caudal, was 

 twice the size of that oi H. foulkei, the vertical diameter of the centrum being 

 4-5 inches. It presented so many peculiarities of form that Prof. Cope thought 

 it to have belonged to a species distinct from H. foulkei. A caudal, apparent- 

 ly terminal, was shorter than the same in that species. He named it Iladro- 

 saurus tripos. 



Another reptile from the same locality was indicated by an elongate, conic 

 tooth, and perhaps by others, which had the cone in cone structure of those 

 of the species of the Crocodilian genus, Thecachampsa. It differed from all these 

 in the removal of the usually opposite dividing cutting ridges to a position 

 near together on the inner face of the crown, and the slight median contrac- 

 tion of the crown, which produced an appearance of enlargements a short 

 distance above the base and below the tip of the crown. Crown conic; length 

 2 in., 6 lines. He named it Polydectes biturgidus. 



Dec. 28tk 

 Dr. Ruschenberger, Vice-President, in the Chair. 



Thirty-eight members present. 



The Report of the Biological and Microscopical Section was re- 

 ceived. 



The publication of Dr. Leidy's Extinct Mammalian Fauna of 

 ' Dakota and Nebraska, constituting the seventh volume of the Jour- 

 nal, was announced. 



The following gentlemen were elected members: Capt. George 

 Wright, U. S. A., Wilbur F. Horn and Rev. Theodore W. J. 

 Wylie. 



On favorable repoVt of the committees the following papers were 

 ordered to be printed : 



[Dec. 



