1853.] ^^ 377 



TJyiio Cumingii is the same with my Unio citntmoides is therefore a synonym to 

 the latter. Prof. Dunker had not had access to my descriptions of the above 

 species when he described in the Zeitschrift fiir Malakozoolgie, 1846 and 1852.'* 



Mr. Girard read two papers, entitled severally " Observations upon 

 the American species of the genus Esox/' and '' Note upon a nest con- 

 structed by Catfishes ;" both of which were referred to the following 

 Committee : Major Le Conte, Dr. Zantzinger and Dr. Ruschenberger. 



Dj*. Leidy offered the following observations : 



In the Proceedings of the Academy for 1851, page 326, some remains of extinct 

 Cetacea are indicated as having been obtained from the green sand of New Jer- 

 sey. At the request of Sir Charles Lyell, I have directed more particular atten- 

 tion to the specimens with a view to determining whether they are true cretace- 

 ous fossils. 



The species named Priscodelphinus Harlayii was proposed upon a single verte- 

 bra which had been previously described by Dr. Harlan, as having belonged to 

 the saurian genus Flesiosaurus* In regard to the cetacean character of the bone 

 there is no doubt. The specimen was obtained from the marl of MuUica Hill, 

 which certainly belongs to the green sand formation of the cretaceous series. 

 Rut as we know that remains of recent animals occasionally find their way into 

 the marl,* the vertebra under consideration may also be accidental in its posi- 

 tion. In texture the specimen has more the appearance of most of the Miocene 

 Cetacean fossils, than it has the bones of the saurians belonging to the marl, 

 although there is no miocene formation at Mullica Hill. 



The species Priscodelphinus grandcevus was proposed on two vertebrae, which 

 were found by Dr. J. Thomas, in the Shiloh marl pits near Jericho, Cumberland 

 Co., and this Mr. T. A. Conrad, who recently visited the locality, informs me 

 is a miocene formation. 



Mr. Conrad has presented me with an outline drawing (of which the accom- 

 panying wood engraving is a copy,) of a tooth, discovered by Mr. 

 Samuel A. Wetherill in the green sand, of the cretaceous series, 

 near Burlington, New Jersey. Tli8 specimen was given to Mr. 

 Conrad, who made the drawing indicated, and afterwards 

 loaned it to an acquaintance, from whoro^e has not been able to 

 obtain it again. The figure represent^^double-fanged tooth, 

 with a crown divided into five prominent lobes. It is, without 

 doubt, the tooth of a mammal, and resembles very much one of 

 the posterior molars of Stenorhynchus serrideiis, Owen, an ani- 

 mxl of the seal tribe. It may have belonged to a cetacean allied 

 \o Ba<<ilosaurus,'h\x\. until further evidence is obtained, I propose 

 to call the species indicated by the tooth Stenorhynchus vetiis. 



Prof. Francis S. Holmes, of Charleston, S. C, has sent for my inspection a 

 collection of mammalian fossils, among which are the remains of several cetace- 

 ans as follows : 



1. A nearly entire tooth, with fragments of five others, from the sands of Ash- 

 ley River, S. C. These teeth may be saurian in character, but I suspect them 

 to belong to a cetaceous genus of the family Delphinidae. The nearly entire spe- 

 cimen resembles in general form the teeth of the dolphins. It is about three 

 inches long, and is curved ; and it has a conical crown capped with enamel, which 

 forms a salient ridge on two sides. The fans is long and conoidal ; and just be- 

 yond the crown is gibbous. On several of the specimens the enamel is smooth, 

 but on the others is longitudinally corrugated. For the animal to which these- 

 teeth belonged the name of Cohphonodon Holmesii is proposed. 



2. Twelve imperfect teeth, averaging an inch in length, from the same locality^ 

 as the former, belonging to the genus Phocodoji? Agassiz. 



See Proceedings, vol. v, 333. 



