1888.] natural sciences of philadelphia. 273 



October 2. 

 The President, Dr. Joseph Leidy, in the chair. 



Fifteen persons present. 



Megalonyx Jeffersonii. — Prof. Leidy exhibited an ungual phalanx 

 of Mega/onyx Jeffersonii, submitted to his examination by Prof. J. 

 E. Todd, of Tabor, Indiiuia, who informed him tliat it was found in 

 a sand bed, below the drift, in Mills Co., Iowa. 



Anomalies of the human skull. — Prof. Leidy exhibited the right 

 half of a skull, from France, in the maxilla of which, besides the 

 usual number of incisors, the canine and premolars, there is a series 

 of four molars, of w'hicli the last one is about half the size of the 

 others. In the same skull the fore part of the middle turbinal is in- 

 flated and forms a large sinus forming part with the anterior eth- 

 moidal sinuses. 



Further, in the same specimen the venous portion of the jugular 

 foramen is nearly obsolete, and its inner portion forms a distinct 

 foramen for the inferior petrosal sinus. The descending portion of 

 the groove for the lateral sinus, about the eighth of an inch wide, 

 ends in a large mastoid foramen. 



October 9. 

 Mr. John H. Redfield in the chair. 

 Eighteen persons present. 



A paper entitled "Contributions to the Natural History of the 

 Bermuda Islands," by Angelo Heilprin, was presented for publica- 

 tion. 



The following, received through the Botanical Section, was order- 

 ed to be printed: — 



J 9 



