692 PROCEEDINGS OF THE ACADEMY OF [Oct.. 



"The Hour-glass Caudices of the Bermuda Pahnetto/' by John W. 

 Harshberger, Ph.D. (September 1). 



"Delaware Valley Forms of Trachelomonas," by T. Chalkley Palmer 

 (September 2). 



"On a Collection of Birds and Mammals from the Colorado Delta, 

 Lower California," by Witmer Stone, with field notes by S. N. Rhoads 

 (September 18). 



"New Land Mollusks of the Japanese Empire," by H. A. Pilsbry 

 and Y. Hirase. 



A paper entitled "Some Vertebrates of the Florida Keys," by Henry 

 W. Fowler, was withdrawn by the author. 



The following papers, by Mr. Clarence B. Moore, were accepted for 

 publication in the Journal, and will constitute the second part of the 

 thirteenth volume, quarto series: 



"Certain Aboriginal Mounds of the Tombigbee River." 

 "Certain Aboriginal Mounds of the Black Warrior River." 

 " Certain Aboriginal Mounds of Mobile Bay and of Mississippi Sound." 

 " Miscellaneous Livestigations." 



The Identity of Eutcenia atrata Kenn. — Mr. Arthur Erwin Brown 

 stated that in the Report of the Pacific Railroad Survey (1860) 

 Kennicott described four garter snakes from California under the name 

 of Eutcenia atrata. Two of his specimens are still in the United States 

 National Museum, and a third is in the Academy's collection. In 

 1892 Professor Cope established Eutcenia inferncdis vidua upon the two 

 co-types of E. atrata in the National Museum, and subsequently marked 

 the Academy's specimen with the same name. Cope's description 

 was referred by Van Denburgh in 1897 to E. elegans, with the statement 

 that this color-form seems to occur only on "the coast slope of the 

 peninsula of San Francisco." In the same paper he cites E. atrata 

 Kenn. as a probable synonym of E. leptocephala B. and G. In 1901 the 

 speaker recognized the identity of Cope's types with those of Kennicott, 

 and referred them to the highly variable E. leptocephala. 



A collection of twenty or more living E. elegans, received by the 

 Zoological Society from Santa Cruz county, just south of San Francisco, 

 contains four examples of the vidua color-form. These correspond 

 with the one type of atrata in the Academy's collection, and with the 

 detailed description of the two in the National Museum with which 

 Dr. Stejneger has kindly supplied me, the only difference of moment 

 being that the four from Santa Cruz have nineteen rows of dorsal 

 scales, while the types of atrata each have nineteen on the anterior 

 third and seventeen on the middle of the body. It is significant that 

 three red elegans from Santa Cruz show a parallel change from the nor- 

 mal number of twenty-one rows to nineteen, about the place where nine- 

 teen drops to seventeen in the atrata specimens. This scale variation is 



