■ 284 



A communication intended for tbe Proceedings, was re- 

 ceived from Prof. Kirkwood, of Indiana University, Bloom- 

 ington, Ind., entitled " On Certain Meteoric Rings." (p. 299.) 



A communication was made by Prof, Cope, " On Adocus, 

 a genus of Cretaceous Emydidfe." (See p. 295.) 



A verbal communication was made by Mr. Chase, on the 

 subject of the Tides. After referring to the diametrically 

 opposite conclusions expressed by Astronomer Royal Airy, 

 and Prof. Challis, respecting the theoretical position of the 

 tidal ellipsoid, and the claim of each, that his views coincide 

 with those of Newton and La Place, Mr. Chase suggested, 

 that a practical solution of the difficulty may perhaps be found 

 by adopting the intermediate position, analogous to that of the 

 barometic spheroid. 



A communication intended for the Proceedings was pre- 

 sented by Dr. Brinton, entitled, " Contributions to a Gram- 

 mar of the Muskokee Language." (See p. 301.) 



Pending nominations Nos. 649 to 655 were lead and ncAV 

 nomination No. 656. And the Society was adjourned. 



VERBAL COMMUNICATION BY E. D. COPE, AT MEETING OP 

 THE A. PHIL. SOC, FEB. 18, 1870. 

 Prof. Cope made some observations on the extent of the order Pytho- 

 nomorpha as exhibited in* cretaceous rocks of the United States. He 

 stated that he was acquainted with twenty-seven species of the group, 

 and that but three were enumerated in the last work on the subject. He 

 defined two new species of Mosasaurus from New Jersey. One of medium 

 size, was from the lower bed in Monmouth Co. ; it had round articular 

 vertebral faces, and a peculiar cariniform angle from the pit on the out- 

 side of the OS quadratum. It was named Mosasaurus fulciatus. Another 

 and larger species was described under the name of Ilosasaurus oarihrus, 

 as of about the proportions of the M. giganteus of Maastricht, but with 

 depressed vertical centra like those of the M. depressus. The quadrate 

 bone differed from that of M. depi'essus and resembled that of M. dekayi. 

 From Cook's middle marl bed (Cretaceous) of New Jersey. 



He also alluded to the occurrence of the Ehinoceros, Dugons, etc., in 

 certain beds in New Jersey, as indicative of the existence of Indian types 

 at one time in this region. He added the genus Sus, at present unknown 

 in the New World, but characteristic of the Palasotropical region. He 

 said his knowledge of its existence depended on an imperfect posterior 

 inferior molar, found near Squankum by Dr. Samuel Lockwood. He 

 named the species iSus vagrans, and said it was near the size of the do- 

 mestic hog. 



