268 PROCEEDINGS OF THE ACADEMY OF 



previously described under the name of Testudo Corsoni. There 

 are two specimens consisting of nearly complete ventral shields, 

 broken into many species. One of these was found at Grizzly 

 Buttes and presented by Dr. Corson; the other was found at Dry 

 Creek, by Mrs. Anna Carter, the wife of Dr. Carter, and was pre- 

 sented by her to the Academy. The specimens exhibit some va- 

 riation in conformation though they are supposed to pertain to the 

 same species. The anterior lobe of the shield has the episternals 

 much prolonged and truncated. The posterior lobe at the ex- 

 tremity presents a wide and deep angular notch. The surface of 

 the shield posteriorly is deeply concave. The length of the plas- 

 tron is about two feet. 



A third specimen of a ventral shield less perfect than the others, 

 has associated with it the median portion of a dorsal shield or 

 carapace. The specimens were found by Dr. Corson on Grizzly 

 Butte. These would appear to indicate that the specimens for- 

 merly described and supposed to pertain to a large En^s, for 

 which the name of E. Carteri was proposed, really belong to the 

 same animal. The error was committed on account of the large 

 costal capitula, which accord in their proportions with those of 

 living terapenes. 



Among other specimens presented are some large cylindrical 

 masses of agate, obtained from the buttes in the vicinity of Carter 

 Station on the Union Pacific R. R. They simulate, in their form 

 and concentric structure, fossil wood, which they however appear 

 not to be, but are rather of the character of siliceous concretions. 

 Some of them contain an axis of clear white chalcedony, and others 

 are occupied along a central cavity by large yellow c^stals of 

 calcite. 



November 12. 

 Mr. Vaux, Vice-President, in the chair. 

 Twenty-three members present. 

 The death of Maj. Gen. Geo. G. Meade, U.S.A., was announced. 



November 19. 

 The President, Dr. Ruschenberger, in the chair. 



November 26. 

 The President, Dr. Ruschenberger, in the chair. 

 Twenty-one members present. 

 The following gentlemen were elected members: 



