238 PROCEEDINGS OF THE CALIFORNIA 



To the above-mentioned collections, I have added specimens of each plant 

 collected by myself during the past year. 



Dr. Kellogg and myself have presented to the Academy quite a number of 

 Australian plants, aud both Dr. Kellogg and Mr. Bloomer have assisted me in 

 arranging and classifying our collections. 



Regular Meeting, February 5th, 1866. 



President in the chair. 



Five members present. 



Mr. Dall presented the following paper by Dr. Canfield. 



Notes on Antilocapra Americana, Ord. 



BY DR. C. A. CANFIELD, OF MONTEREY. 



The following notes were taken from 1855 to 1858, in Monterey County, Cal- 

 ifornia, and were communicated to Prof. Baird in 1859. 



About the first of January the old bucks all shed their horns. A few days 

 after, one was shot, with two hairy stumps or horn-cores, several inches long, 

 just tipped with growing horn. This was observed to spread upward and 

 downward till the whole of the process of the frontal bone was covered with 

 horn. The " proug " commenced the same process at its tip, and gradually 

 coalesced with the main horn, leaving no suture. As the horn increases in 

 length it curves forward and inward. It takes several months to perfect the 

 new horn. The females possess small curved horns, one to three inches long, 

 sometimes recurving to the skull, which were not proved to be deciduous. 



The horn, when shed, leaves a process of the frontal bone, covered with hair, 

 soon replaced as above by horn at the tip. These facts were more minutely 

 observed in two young bucks, reared by hand to the age respectively of one and 

 two years. 



These facts would tend to separate the genus Antilocapra from the family 

 Cavicornia, and it may possibly form a family by itself. 



Prof. W. P. Blake read a portion of a letter from Dr. C. T. 

 Jackson of Boston, containing a notice of a remarkable spider 

 brought from Georgia by Dr. Wilder, an account of which has 

 been published in the Proceedings of the American Academy and 

 of the Boston Natural History Society. 



